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CVE-2022-39377

26
FAUCET Score

CVE-2022-39377 is a size_t overflow vulnerability in the sysstat utility, specifically affecting versions 9.1.16 through 12.7.0 on 32-bit Linux systems. This flaw in the allocate_structures function, due to insufficient bounds checking before arithmetic multiplication, can lead to a buffer overflow and potentially Remote Code Execution (RCE). Rated with a CVSS score of 7.8 (High), it requires no privileges and user interaction, but the attack vector is local. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.1.6, < 12.6.1CPE matchmatch criteria
cpe:2.3:a:sysstat_project:sysstat:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 59th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

microsoftpatch availablevia msrc
Product: 18500-16820Fixed in: 12.3.3-2
microsoftpatch availablevia msrc
Product: 18501-16823Fixed in: 12.7.1-1
microsoftpatch availablevia msrc
Product: cm1 sysstat 12.3.3-2 on CBL Mariner 1.0Fixed in: 12.3.3-2
microsoftpatch availablevia msrc
Product: cbl2 sysstat 12.7.1-1 on CBL Mariner 2.0Fixed in: 12.7.1-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: sysstat-0:11.7.3-9.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: sysstat-0:12.5.4-5.el9
View patch

Vendor Advisories (2)

microsoft2022-Nov/CVE-2022-39377Important

sysstat Incorrect Buffer Size calculation on 32-bit systems results in RCE via buffer overflow

Nov 8, 2022
redhatCVE-2022-39377Moderate

sysstat: arithmetic overflow in allocate_structures() on 32 bit systems

Nov 8, 2022

References

lists.debian.org / debian-lts-announce/2025/10/msg00017.html
github.com / sysstat/sysstat/security/advisories/GHSA-q8r6-g56f-9w7x
ExploitThird Party Advisory
lists.debian.org / debian-lts-announce/2022/11/msg00014.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6F26ALXWYHT4LN2AHPZM34OQEXTJE3JZ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7X6WKTODOUDV6M3HZMASYNZP6EM4N7W4
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/PHUVUDIVDJZ7AVXD3XX3NBXXXKPOKN3N
security.gentoo.org / glsa/202211-07
Third Party Advisory