What is CVE-2021-28904?

CVE-2021-28904 is a high-severity vulnerability in Cesnet Libyang, classified under CWE-252. CVSS score: 7.5/10. Published 2021-05-20.

How severe is CVE-2021-28904?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-28904 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cesnet Libyang

CVE-2021-28904

In function ext_get_plugin() in libyang <= v1.0.225, it doesn't check whether the value of revision is NULL. If revision is NULL, the operation of strcmp(revision, ext_plugins[u].revision) will lead to a crash.

EPSS: 0.014 (69.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cesnet Libyang
N/a — versions n/a

Weakness classification (CWE)

CWE-252

Public proof-of-concept exploits

n0-traces/cve_

References

cve@mitre.org (x_refsource_CONFIRM, Exploit, Third Party Advisory, Issue Tracking)
cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2021-28904?: CVE-2021-28904 is a high-severity vulnerability in Cesnet Libyang, classified under CWE-252. CVSS score: 7.5/10. Published 2021-05-20.
How severe is CVE-2021-28904?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-28904 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.