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CVE-2022-26126

26
FAUCET Score

CVE-2022-26126 is a high-severity buffer overflow vulnerability affecting FRRouting versions up to 8.1.0, including specific Fedora distributions. This flaw stems from the improper use of strdup with non-zero-terminated binary strings in the isis_nb_notifications.c component. An attacker could exploit this locally with low complexity, potentially leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.2CPE matchmatch criteria
cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 59th percentile among its peer group of 11,621 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

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: frr
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: frr

Vendor Advisories (1)

redhatCVE-2022-26126Moderate

frrouting: Misusing strdup leads to stack overflow in isis_nb_notifications.c

Feb 5, 2022

References

lists.debian.org / debian-lts-announce/2024/09/msg00007.html
github.com / FRRouting/frr/issues/10505
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2024/04/msg00019.html
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MIEQNIWUSBQTFR65HM2LLIB7PH27CZUZ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/VTYSAL4QCE4XWMMBKUB7LSLPAFLWUML4
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XUCZR6RYQVZ35BFUV7OLIUEHZW2433I2