Is CVE-2021-33909 in the CISA KEV catalog?

No. CVE-2021-33909 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33909?

CVE-2021-33909 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-33909?

CVE-2021-33909 has an EPSS score of 9.73% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33909?

Upgrade linux on debian 11 to 5.10.46-2 or later. Fixes are available for 154 affected products.

CVE & CISA-KEV Catalog

CVE-2021-33909

HIGHEPSS 95th pctl

7.8

CVSS v3

NVD

Description

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

CWE-190Integer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.46-2CVE-2021-33909

awsUbuntu

Fixed in:4.4.0-1098LSN-0083-1

Fixed in:4.15.0-1054LSN-0083-1

Fixed in:5.4.0-1009LSN-0083-1

azureUbuntu

Fixed in:4.15.0-1063LSN-0083-1

Fixed in:5.4.0-1010LSN-0083-1

gcpUbuntu

Fixed in:5.4.0-1009LSN-0079-1

Fixed in:5.4.0-1009LSN-0081-1

Fixed in:5.4.0-1009LSN-0083-1

generic-4.15Ubuntu

Fixed in:4.15.0-143LSN-0083-1

Fixed in:4.15.0-69LSN-0081-1

Fixed in:4.15.0-69LSN-0079-1

Fixed in:4.15.0-69LSN-0081-1

Fixed in:4.15.0-69LSN-0083-1

generic-4.4Ubuntu

Fixed in:4.4.0-168LSN-0081-1

Fixed in:4.4.0-168LSN-0079-1

Fixed in:4.4.0-211LSN-0083-1

Fixed in:4.4.0-211LSN-0081-1

Fixed in:4.4.0-168LSN-0079-1

generic-5.4Ubuntu

Fixed in:5.4.0-26LSN-0081-1

Fixed in:5.4.0-26LSN-0079-1

Fixed in:5.4.0-26LSN-0083-1

Fixed in:5.4.0-26LSN-0081-1

gkeUbuntu

Fixed in:5.4.0-1033LSN-0079-1

Fixed in:5.4.0-1033LSN-0083-1

Fixed in:5.4.0-1033LSN-0081-1

gke-4.15Ubuntu

Fixed in:4.15.0-1076LSN-0081-1

Fixed in:4.15.0-1076LSN-0083-1

Fixed in:4.15.0-1076LSN-0079-1

gke-5.4Ubuntu

Fixed in:5.4.0-1009LSN-0081-1

Fixed in:5.4.0-1009LSN-0079-1

Fixed in:5.4.0-1009LSN-0083-1

gkeopUbuntu

Fixed in:5.4.0-1009LSN-0083-1

Fixed in:5.4.0-1009LSN-0081-1

Fixed in:5.4.0-1009LSN-0079-1

gkeop-5.4Ubuntu

Fixed in:5.4.0-1007LSN-0081-1

Fixed in:5.4.0-1007LSN-0083-1

Fixed in:5.4.0-1007LSN-0079-1

linuxUbuntu

Fixed in:3.13.0-186.237USN-5014-1

Fixed in:4.4.0-212.244USN-5014-1

Fixed in:4.15.0-151.157USN-5018-1

Fixed in:5.4.0-80.90USN-5017-1

linux-awsUbuntu

Fixed in:4.4.0-1094.99USN-5014-1

Fixed in:4.4.0-1130.144USN-5014-1

Fixed in:4.15.0-1109.116USN-5018-1

Fixed in:5.4.0-1054.57USN-5017-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1054.57~18.04.1USN-5017-1

linux-aws-5.8Ubuntu

Fixed in:5.8.0-1041.43~20.04.1USN-5016-1

linux-aws-hweUbuntu

Fixed in:4.15.0-1109.116~16.04.1USN-5018-1

linux-azureUbuntu

Fixed in:4.15.0-1121.134~14.04.1USN-5018-1

Fixed in:4.15.0-1121.134~16.04.1USN-5018-1

Fixed in:5.4.0-1055.57USN-5017-1

linux-azure-4.15Ubuntu

Fixed in:4.15.0-1121.134USN-5018-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1055.57~18.04.1USN-5017-1

linux-azure-5.8Ubuntu

Fixed in:5.8.0-1039.42~20.04.1USN-5016-1

linux-gcpUbuntu

Fixed in:4.15.0-1106.120~16.04.1USN-5018-1

Fixed in:5.4.0-1049.53USN-5017-1

linux-gcp-4.15Ubuntu

Fixed in:4.15.0-1106.120USN-5018-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1049.53~18.04.1USN-5017-1

linux-gcp-5.8Ubuntu

Fixed in:5.8.0-1038.40~20.04.1USN-5016-1

linux-gkeUbuntu

Fixed in:5.4.0-1049.52USN-5017-1

linux-gke-5.3Ubuntu

Fixed in:5.3.0-1045.48USN-5014-1

linux-gke-5.4Ubuntu

Fixed in:5.4.0-1049.52~18.04.1USN-5017-1

linux-gkeopUbuntu

Fixed in:5.4.0-1021.22USN-5017-1

linux-gkeop-5.4Ubuntu

Fixed in:5.4.0-1021.22~18.04.1USN-5017-1

linux-hweUbuntu

Fixed in:4.15.0-151.157~16.04.1USN-5018-1

Fixed in:5.3.0-76.72USN-5014-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-80.90~18.04.1USN-5017-1

linux-hwe-5.8Ubuntu

Fixed in:5.8.0-63.71~20.04.1USN-5016-1

linux-image-3.13.0-186-genericUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-generic-lpaeUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-lowlatencyUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-powerpc-e500Ubuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-powerpc-e500mcUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-powerpc-smpUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-powerpc64-embUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-3.13.0-186-powerpc64-smpUbuntu

Fixed in:3.13.0-186.237USN-5014-1

linux-image-4.15.0-1078-oracleUbuntu

Fixed in:4.15.0-1078.86~16.04.1USN-5018-1

Fixed in:4.15.0-1078.86USN-5018-1

linux-image-4.15.0-1092-raspi2Ubuntu

Fixed in:4.15.0-1092.98USN-5018-1

linux-image-4.15.0-1097-kvmUbuntu

Fixed in:4.15.0-1097.99USN-5018-1

linux-image-4.15.0-1106-gcpUbuntu

Fixed in:4.15.0-1106.120~16.04.1USN-5018-1

Fixed in:4.15.0-1106.120USN-5018-1

linux-image-4.15.0-1109-awsUbuntu

Fixed in:4.15.0-1109.116~16.04.1USN-5018-1

Fixed in:4.15.0-1109.116USN-5018-1

linux-image-4.15.0-1109-snapdragonUbuntu

Fixed in:4.15.0-1109.118USN-5018-1

linux-image-4.15.0-1121-azureUbuntu

Fixed in:4.15.0-1121.134~14.04.1USN-5018-1

Fixed in:4.15.0-1121.134~16.04.1USN-5018-1

Fixed in:4.15.0-1121.134USN-5018-1

linux-image-4.15.0-151-genericUbuntu

Fixed in:4.15.0-151.157~16.04.1USN-5018-1

Fixed in:4.15.0-151.157USN-5018-1

linux-image-4.15.0-151-generic-lpaeUbuntu

Fixed in:4.15.0-151.157USN-5018-1

linux-image-4.15.0-151-lowlatencyUbuntu

Fixed in:4.15.0-151.157~16.04.1USN-5018-1

Fixed in:4.15.0-151.157USN-5018-1

linux-image-4.4.0-1094-awsUbuntu

Fixed in:4.4.0-1094.99USN-5014-1

linux-image-4.4.0-1095-kvmUbuntu

Fixed in:4.4.0-1095.104USN-5014-1

linux-image-4.4.0-1130-awsUbuntu

Fixed in:4.4.0-1130.144USN-5014-1

linux-image-4.4.0-212-genericUbuntu

Fixed in:4.4.0-212.244~14.04.1USN-5014-1

Fixed in:4.4.0-212.244USN-5014-1

linux-image-4.4.0-212-lowlatencyUbuntu

Fixed in:4.4.0-212.244~14.04.1USN-5014-1

Fixed in:4.4.0-212.244USN-5014-1

linux-image-5.10.0-1038-oemUbuntu

Fixed in:5.10.0-1038.40USN-5015-1

linux-image-5.3.0-1042-raspi2Ubuntu

Fixed in:5.3.0-1042.44USN-5014-1

linux-image-5.3.0-1045-gkeUbuntu

Fixed in:5.3.0-1045.48USN-5014-1

linux-image-5.3.0-76-genericUbuntu

Fixed in:5.3.0-76.72USN-5014-1

linux-image-5.3.0-76-lowlatencyUbuntu

Fixed in:5.3.0-76.72USN-5014-1

linux-image-5.4.0-1021-gkeopUbuntu

Fixed in:5.4.0-1021.22~18.04.1USN-5017-1

Fixed in:5.4.0-1021.22USN-5017-1

linux-image-5.4.0-1041-raspiUbuntu

Fixed in:5.4.0-1041.45~18.04.1USN-5017-1

Fixed in:5.4.0-1041.45USN-5017-1

linux-image-5.4.0-1044-kvmUbuntu

Fixed in:5.4.0-1044.46USN-5017-1

linux-image-5.4.0-1049-gcpUbuntu

Fixed in:5.4.0-1049.53~18.04.1USN-5017-1

Fixed in:5.4.0-1049.53USN-5017-1

linux-image-5.4.0-1049-gkeUbuntu

Fixed in:5.4.0-1049.52~18.04.1USN-5017-1

Fixed in:5.4.0-1049.52USN-5017-1

linux-image-5.4.0-1052-oracleUbuntu

Fixed in:5.4.0-1052.56~18.04.1USN-5017-1

Fixed in:5.4.0-1052.56USN-5017-1

linux-image-5.4.0-1054-awsUbuntu

Fixed in:5.4.0-1054.57~18.04.1USN-5017-1

Fixed in:5.4.0-1054.57USN-5017-1

linux-image-5.4.0-1055-azureUbuntu

Fixed in:5.4.0-1055.57~18.04.1USN-5017-1

Fixed in:5.4.0-1055.57USN-5017-1

linux-image-5.4.0-80-genericUbuntu

Fixed in:5.4.0-80.90~18.04.1USN-5017-1

Fixed in:5.4.0-80.90USN-5017-1

linux-image-5.4.0-80-generic-lpaeUbuntu

Fixed in:5.4.0-80.90~18.04.1USN-5017-1

Fixed in:5.4.0-80.90USN-5017-1

linux-image-5.4.0-80-lowlatencyUbuntu

Fixed in:5.4.0-80.90~18.04.1USN-5017-1

Fixed in:5.4.0-80.90USN-5017-1

linux-image-5.8.0-1037-oracleUbuntu

Fixed in:5.8.0-1037.38~20.04.1USN-5016-1

linux-image-5.8.0-1038-gcpUbuntu

Fixed in:5.8.0-1038.40~20.04.1USN-5016-1

linux-image-5.8.0-1039-azureUbuntu

Fixed in:5.8.0-1039.42~20.04.1USN-5016-1

linux-image-5.8.0-1041-awsUbuntu

Fixed in:5.8.0-1041.43~20.04.1USN-5016-1

linux-image-5.8.0-63-genericUbuntu

Fixed in:5.8.0-63.71~20.04.1USN-5016-1

linux-image-5.8.0-63-generic-64kUbuntu

Fixed in:5.8.0-63.71~20.04.1USN-5016-1

linux-image-5.8.0-63-generic-lpaeUbuntu

Fixed in:5.8.0-63.71~20.04.1USN-5016-1

linux-image-5.8.0-63-lowlatencyUbuntu

Fixed in:5.8.0-63.71~20.04.1USN-5016-1

linux-image-awsUbuntu

Fixed in:4.4.0.1094.92USN-5014-1

Fixed in:4.4.0.1130.135USN-5014-1

Fixed in:5.4.0.1054.37USN-5017-1

Fixed in:5.8.0.1041.43~20.04.13USN-5016-1

linux-image-aws-hweUbuntu

Fixed in:4.15.0.1109.100USN-5018-1

linux-image-aws-lts-18.04Ubuntu

Fixed in:4.15.0.1109.112USN-5018-1

linux-image-aws-lts-20.04Ubuntu

Fixed in:5.4.0.1054.57USN-5017-1

linux-image-azureUbuntu

Fixed in:4.15.0.1121.94USN-5018-1

Fixed in:4.15.0.1121.112USN-5018-1

Fixed in:5.4.0.1055.35USN-5017-1

Fixed in:5.8.0.1039.42~20.04.11USN-5016-1

linux-image-azure-lts-18.04Ubuntu

Fixed in:4.15.0.1121.94USN-5018-1

linux-image-azure-lts-20.04Ubuntu

Fixed in:5.4.0.1055.53USN-5017-1

linux-image-gcpUbuntu

Fixed in:4.15.0.1106.107USN-5018-1

Fixed in:5.4.0.1049.36USN-5017-1

Fixed in:5.8.0.1038.40~20.04.13USN-5016-1

linux-image-gcp-lts-18.04Ubuntu

Fixed in:4.15.0.1106.125USN-5018-1

linux-image-gcp-lts-20.04Ubuntu

Fixed in:5.4.0.1049.59USN-5017-1

linux-image-genericUbuntu

Fixed in:3.13.0.186.195USN-5014-1

Fixed in:4.4.0.212.219USN-5014-1

Fixed in:4.15.0.151.139USN-5018-1

Fixed in:5.4.0.80.84USN-5017-1

linux-image-generic-64k-hwe-20.04Ubuntu

Fixed in:5.8.0.63.71~20.04.45USN-5016-1

linux-image-generic-hwe-16.04Ubuntu

Fixed in:4.15.0.151.146USN-5018-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.8.0.63.71~20.04.45USN-5016-1

linux-image-generic-lpaeUbuntu

Fixed in:3.13.0.186.195USN-5014-1

Fixed in:4.15.0.151.139USN-5018-1

Fixed in:5.4.0.80.84USN-5017-1

linux-image-generic-lpae-hwe-18.04Ubuntu

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

linux-image-generic-lpae-hwe-20.04Ubuntu

Fixed in:5.8.0.63.71~20.04.45USN-5016-1

linux-image-generic-lts-xenialUbuntu

Fixed in:4.4.0.212.185USN-5014-1

linux-image-generic-paeUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-gkeUbuntu

Fixed in:4.15.0.1106.107USN-5018-1

Fixed in:5.4.0.1049.59USN-5017-1

linux-image-gke-5.3Ubuntu

Fixed in:5.3.0.1045.28USN-5014-1

linux-image-gke-5.4Ubuntu

Fixed in:5.4.0.1049.52~18.04.15USN-5017-1

Fixed in:5.4.0.1049.59USN-5017-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1021.24USN-5017-1

linux-image-gkeop-5.3Ubuntu

Fixed in:5.3.0.76.133USN-5014-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1021.22~18.04.22USN-5017-1

Fixed in:5.4.0.1021.24USN-5017-1

linux-image-highbankUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-kvmUbuntu

Fixed in:4.4.0.1095.93USN-5014-1

Fixed in:4.15.0.1097.93USN-5018-1

Fixed in:5.4.0.1044.43USN-5017-1

linux-image-lowlatencyUbuntu

Fixed in:3.13.0.186.195USN-5014-1

Fixed in:4.4.0.212.219USN-5014-1

Fixed in:4.15.0.151.139USN-5018-1

Fixed in:5.4.0.80.84USN-5017-1

linux-image-lowlatency-hwe-16.04Ubuntu

Fixed in:4.15.0.151.146USN-5018-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.8.0.63.71~20.04.45USN-5016-1

linux-image-lowlatency-lts-xenialUbuntu

Fixed in:4.4.0.212.185USN-5014-1

linux-image-lowlatency-paeUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-oemUbuntu

Fixed in:4.15.0.151.146USN-5018-1

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

Fixed in:5.4.0.80.84USN-5017-1

linux-image-oem-20.04Ubuntu

Fixed in:5.10.0.1038.40USN-5015-1

linux-image-oem-20.04bUbuntu

Fixed in:5.10.0.1038.40USN-5015-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

Fixed in:5.4.0.80.84USN-5017-1

linux-image-omapUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-oracleUbuntu

Fixed in:4.15.0.1078.66USN-5018-1

Fixed in:5.4.0.1052.56~18.04.32USN-5017-1

Fixed in:5.8.0.1037.38~20.04.13USN-5016-1

linux-image-oracle-lts-18.04Ubuntu

Fixed in:4.15.0.1078.88USN-5018-1

linux-image-oracle-lts-20.04Ubuntu

Fixed in:5.4.0.1052.52USN-5017-1

linux-image-powerpc-e500Ubuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-powerpc-e500mcUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-powerpc-smpUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-powerpc64-embUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-powerpc64-smpUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1041.76USN-5017-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1041.44USN-5017-1

linux-image-raspi2Ubuntu

Fixed in:4.15.0.1092.90USN-5018-1

Fixed in:5.4.0.1041.76USN-5017-1

linux-image-raspi2-hwe-18.04Ubuntu

Fixed in:5.3.0.1042.31USN-5014-1

linux-image-serverUbuntu

Fixed in:3.13.0.186.195USN-5014-1

linux-image-snapdragonUbuntu

Fixed in:4.15.0.1109.112USN-5018-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

linux-image-virtualUbuntu

Fixed in:3.13.0.186.195USN-5014-1

Fixed in:4.4.0.212.219USN-5014-1

Fixed in:4.15.0.151.139USN-5018-1

Fixed in:5.4.0.80.84USN-5017-1

linux-image-virtual-hwe-16.04Ubuntu

Fixed in:4.15.0.151.146USN-5018-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.80.90~18.04.72USN-5017-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.8.0.63.71~20.04.45USN-5016-1

linux-image-virtual-lts-xenialUbuntu

Fixed in:4.4.0.212.185USN-5014-1

linux-kvmUbuntu

Fixed in:4.4.0-1095.104USN-5014-1

Fixed in:4.15.0-1097.99USN-5018-1

Fixed in:5.4.0-1044.46USN-5017-1

linux-lts-xenialUbuntu

Fixed in:4.4.0-212.244~14.04.1USN-5014-1

linux-oem-5.10Ubuntu

Fixed in:5.10.0-1038.40USN-5015-1

linux-oracleUbuntu

Fixed in:4.15.0-1078.86~16.04.1USN-5018-1

Fixed in:4.15.0-1078.86USN-5018-1

Fixed in:5.4.0-1052.56USN-5017-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1052.56~18.04.1USN-5017-1

linux-oracle-5.8Ubuntu

Fixed in:5.8.0-1037.38~20.04.1USN-5016-1

linux-raspiUbuntu

Fixed in:5.4.0-1041.45USN-5017-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1041.45~18.04.1USN-5017-1

linux-raspi2Ubuntu

Fixed in:4.15.0-1092.98USN-5018-1

linux-raspi2-5.3Ubuntu

Fixed in:5.3.0-1042.44USN-5014-1

linux-snapdragonUbuntu

Fixed in:4.15.0-1109.118USN-5018-1

lowlatency-4.15Ubuntu

Fixed in:4.15.0-143LSN-0083-1

Fixed in:4.15.0-69LSN-0081-1

Fixed in:4.15.0-69LSN-0079-1

Fixed in:4.15.0-69LSN-0081-1

Fixed in:4.15.0-69LSN-0083-1

lowlatency-4.4Ubuntu

Fixed in:4.4.0-168LSN-0079-1

Fixed in:4.4.0-168LSN-0081-1

Fixed in:4.4.0-168LSN-0079-1

Fixed in:4.4.0-211LSN-0081-1

Fixed in:4.4.0-211LSN-0083-1

lowlatency-5.4Ubuntu

Fixed in:5.4.0-26LSN-0081-1

Fixed in:5.4.0-26LSN-0079-1

Fixed in:5.4.0-26LSN-0081-1

Fixed in:5.4.0-26LSN-0083-1

oemUbuntu

Fixed in:4.15.0-1063LSN-0081-1

Fixed in:4.15.0-1063LSN-0083-1

Fixed in:4.15.0-1063LSN-0079-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

9.73%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

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Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.