Is CVE-2019-3821 in the CISA KEV catalog?

No. CVE-2019-3821 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-3821?

CVE-2019-3821 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-3821?

CVE-2019-3821 has an EPSS score of 2.95% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-3821?

Upgrade ceph on ubuntu 16.04 to 10.2.11-0ubuntu0.16.04.2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2019-3821

HIGHEPSS 85th pctl

7.5

CVSS v3

NVD

Description

A flaw was found in the way civetweb frontend was handling requests for ceph RGW server with SSL enabled. An unauthenticated attacker could create multiple connections to ceph RADOS gateway to exhaust file descriptors for ceph-radosgw service resulting in a remote denial of service.

CWE-772

How to fix

Remediation Available

cephUbuntu

Fixed in:10.2.11-0ubuntu0.16.04.2USN-4035-1

ceph-commonUbuntu

Fixed in:10.2.11-0ubuntu0.16.04.2USN-4035-1

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 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

2.95%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Third-Party Advisory3

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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 2025-05-05.