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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…
- 6.8MediumCVSS base score
- 1.4%Exploitation in 30 daysEPSS · top 28% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
Published
- 16 years later
· 16 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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 (10 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.
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)
- EUVD EUVD-2008-2415 (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)
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[](https://cveledger.app/cve/CVE-2008-2420)Record last updated .