CVE-2021-37155 json
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the seri…
published 2021-07-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-23729
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.
Patch / fix
- wolfssl wolfssl 4.8.0
- wolfssl Debian 13, Debian 12 5.0.0-1
debian advisories DEBIAN-CVE-2021-37155
- github.com/wolfSSL/wolfssl#3990 pull request
- github.com/wolfSSL/wolfssl/releases/tag/v4.8.0-stable release
Exploit prediction
1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
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 |
References
-
github.com
/wolfSSL/wolfssl/pull/3990
patch, third-party-advisory
-
github.com
/wolfSSL/wolfssl/releases/tag/v4.8.0-stable
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-37155
- NVD CVE-2021-37155
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.