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CVE-2008-2420
The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers…
Medium6.8EPSS 1.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The OCSP functionality in stunnel before 4.24 does not properly search certificate revocation lists (CRL), which allows remote attackers to bypass intended access restrictions by using revoked certificates.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (12)
- 30425 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- stunnel-ocsp-security-bypass(42528) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- FEDORA-2008-4606 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- ADV-2008-1569 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 30335 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 31438 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- FEDORA-2008-4531 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- MDVSA-2008:168 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- [stunnel-announce] 20080519 stunnel 4.24 released (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2008-4579 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-200808-08 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 29309 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2008-2420)Record last updated .