CVE-2021-28903

7.5 highEPSS 2.4%

High (7.5) in cesnet libyang. EPSS 2.4% chance of exploitation in the next 30 days.

A stack overflow in libyang <= v1.0.225 can cause a denial of service through function lyxml_parse_mem(). lyxml_parse_elem() function will be called recursively, which will consume stack space and lead to crash.

Severity

CVSS 3.1

7.5 high

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

EPSS: 2.4% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE: CWE-674
Published: 2021-05-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cesnet:libyang

References

https://github.com/CESNET/libyang/issues/1453
https://security.gentoo.org/glsa/202107-54
https://github.com/CESNET/libyang/issues/1453
https://security.gentoo.org/glsa/202107-54

Check your stack JSON