Is CVE-2022-26126 in the CISA KEV catalog?

No. CVE-2022-26126 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-26126?

CVE-2022-26126 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2022-26126?

CVE-2022-26126 has an EPSS score of 1.07% (61th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-26126?

Upgrade frr on debian 11 to 7.5.1-1.1+deb11u3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-26126

HIGH

7.8

CVSS v3

NVD

Description

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to the use of strdup with a non-zero-terminated binary string in isis_nb_notifications.c.

CWE-119Buffer Overflow

How to fix

Remediation Available

frrDebian

Fixed in:7.5.1-1.1+deb11u3CVE-2022-26126

Fixed in:8.4.1-1CVE-2022-26126

frrUbuntu

Fixed in:7.2.1-1ubuntu0.2+esm2USN-6807-1

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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.07%probability of exploitation in 30 days

61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

Exploit1

github.com

Other references5

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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 2025-11-04.