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Fencer Vulns
critical 9.8

CVE-2021-28237 json

LibreDWG v0.12.3 was discovered to contain a heap-buffer overflow via decode_preR13.

published 2021-12-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14926

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

LibreDWG v0.12.3 was discovered to contain a heap-buffer overflow via decode_preR13.

Patch / fix

  • libredwg openSUSE Tumbleweed 0.12.5-2.1
  • libredwg Package Hub 15 SP4, openSUSE Leap 15.4 0.12.5-bp154.2.3.1

opensuse advisories openSUSE-SU-2024:12083-1openSUSE-SU-2022:0155-1

Exploit prediction

1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/LibreDWG/libredwg/issues/325 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.