CVE-2020-23910 json
Stack-based buffer overflow vulnerability in asn1c through v0.9.28 via function genhash_get in genhash.c.
published 3y ago modified 4mo ago also EUVD-2020-16647
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
Stack-based buffer overflow vulnerability in asn1c through v0.9.28 via function genhash_get in genhash.c.
Patch / fix
- github.com/vlm/asn1c/issues/396 advisory
Is CVE-2020-23910 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2y ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/vlm/asn1c/issues/396 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/vlm/asn1c/issues/396
exploit, issue-tracking, patch, vendor-advisory
Sources
- CVE List CVE-2020-23910
- NVD CVE-2020-23910
Fencer Intel 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.