CVE-2023-26917
CVE-2023-26917 is a high-severity vulnerability in Cesnet Libyang with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (55th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-476
- Affected product: Cesnet Libyang
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2023-26917?
- 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.
- How severe is CVE-2023-26917?
- CVE-2023-26917 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-26917 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-26917?
- CVE-2023-26917 affects Cesnet Libyang. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-26917?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-26917 published?
- CVE-2023-26917 was published on 2023-04-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*
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