Is CVE-2024-21849 in the CISA KEV catalog?

No. CVE-2024-21849 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-21849?

CVE-2024-21849 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2024-21849?

CVE-2024-21849 has an EPSS score of 0.52% (40th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-21849?

Upgrade big-ip advanced web application firewall to 16.1.4 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2024-21849

HIGH

7.5

CVSS v3

NVD

Description

When an Advanced WAF/ASM security policy and a Websockets profile are configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CWE-466

How to fix

Remediation Available

big-ip advanced web application firewallNVD

Affected:>= 16.1.0, < 16.1.4Fixed in:16.1.4CVE-2024-21849derived from NVD

big-ip application security managerNVD

Affected:>= 16.1.0, < 16.1.4Fixed in:16.1.4CVE-2024-21849derived from NVD

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.52%probability of exploitation in 30 days

40thpercentile

Low risk: more likely to be exploited than 40% of all known CVEs.

References

Vendor Advisory1

my.f5.com

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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 2024-12-12.