CVE-2021-28906
CVSS v3
7.5
HIGH
EPSS Score
1.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Technical details
- Published
- 2021-05-20
Frequently asked questions
What is CVE-2021-28906?
In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Is CVE-2021-28906 actively exploited?
Active exploitation of CVE-2021-28906 has not been confirmed. Its EPSS score was 1.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-28906?
CVE-2021-28906 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-28906 affecting your environment?
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