Is CVE-2022-3821 in the CISA KEV catalog?

No. CVE-2022-3821 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-3821?

CVE-2022-3821 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2022-3821?

CVE-2022-3821 has an EPSS score of 0.41% (33th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-3821?

Upgrade systemd on debian 11 to 247.3-7+deb11u2 or later. Fixes are available for 34 affected products.

CVE & CISA-KEV Catalog

CVE-2022-3821

MEDIUM

5.5

CVSS v3

NVD

Description

An off-by-one Error issue was discovered in Systemd in format_timespan() function of time-util.c. An attacker could supply specific values for time and accuracy that leads to buffer overrun in format_timespan(), leading to a Denial of Service.

CWE-193

How to fix

Remediation Available

systemdDebian

Fixed in:247.3-7+deb11u2CVE-2022-3821

Fixed in:251.3-1CVE-2022-3821

systemdRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemdRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-containerRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-containerRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-container-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-container-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-debugsourceRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-debugsourceRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-develRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-develRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-journal-remoteRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-journal-remoteRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-journal-remote-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-journal-remote-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-libsRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-libsRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-libs-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-libs-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-pamRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-pamRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-pam-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-pam-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-testsRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-testsRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-tests-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-tests-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-udevRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-udevRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-udev-debuginfoRocky

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemd-udev-debuginfoRed Hat / RHEL

Fixed in:0:239-58.el8_6.13RHSA-2024:1105

systemdUbuntu

Fixed in:204-5ubuntu20.31+esm2USN-5928-1

Fixed in:229-4ubuntu21.31+esm3USN-5928-1

Fixed in:237-3ubuntu10.57USN-5928-1

Fixed in:245.4-4ubuntu3.20USN-5928-1

Fixed in:249.11-0ubuntu3.7USN-5928-1

Fixed in:251.4-1ubuntu7.1USN-5928-1

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.41%probability of exploitation in 30 days

33rdpercentile

Low risk: more likely to be exploited than 33% of all known CVEs.

References

Patch2

Exploit1

github.com

Third-Party Advisory1

bugzilla.redhat.com

Other references3

Related Vulnerabilities

Other CWE-193 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-3156	High	7.8	99%	KEV	Fix
CVE-2003-0466	Critical	9.8	78%	-	-
CVE-2023-44444	High	7.8	56%	-	Fix
CVE-2021-23017	High	7.7	53%	-	Fix
CVE-2023-28709	High	7.5	52%	-	Fix
CVE-2018-8828	Critical	9.8	31%	-	Fix

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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 2025-05-02.