Is CVE-2023-26917 in the CISA KEV catalog?

No. CVE-2023-26917 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-26917?

CVE-2023-26917 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-26917?

CVE-2023-26917 has an EPSS score of 0.89% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-26917?

Upgrade libyang on debian 13 to 3.4.2+dfsg-2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2023-26917

HIGH

7.5

CVSS v3

NVD

Description

libyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lysp_stmt_validate_value at lys_parse_mem.c.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

libyangDebian

Fixed in:3.4.2+dfsg-2CVE-2023-26917

libyang2Ubuntu

Fixed in:2.1.30-2.1ubuntu0.1USN-7752-1

libyang2t64Ubuntu

Fixed in:2.1.30-2.1ubuntu0.1USN-7752-1

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

0.89%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Exploit1

github.com

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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 2025-02-11.