High severity7.5NVD Advisory· Published May 20, 2021· Updated Jun 17, 2026

CVE-2021-28903

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cesnet/libyang2 versions
cpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*range: <=1.0.225
- (no CPE)range: <=1.0.225
libyang/libyangdescription
osv-coords4 versions
pkg:rpm/opensuse/libyang&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/libyang&distro=openSUSE%20Leap%2015.4 pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3 pkg:rpm/suse/libyang&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP4
< 1.0.184-150300.3.6.1+ 3 more
- (no CPE)range: < 1.0.184-150300.3.6.1
- (no CPE)range: < 1.0.184-150300.3.6.1
- (no CPE)range: < 1.0.184-150300.3.6.1
- (no CPE)range: < 1.0.184-150300.3.6.1

Patches

Vulnerability mechanics

References

github.com/CESNET/libyang/issues/1453nvdExploitIssue TrackingThird Party Advisory
security.gentoo.org/glsa/202107-54nvdThird Party Advisory

News mentions

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cvss	0.488
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000