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CVE-2006-2659
libs/comverp.c in Courier MTA before 0.53.2 allows attackers to cause a denial of service (CPU consumption) via unknown vectors involving…
High7.8EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
libs/comverp.c in Courier MTA before 0.53.2 allows attackers to cause a denial of service (CPU consumption) via unknown vectors involving usernames that contain the "=" (equals) character, which is not properly handled during encoding.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (13)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=368834 (opens in a new tab)x_refsource_CONFIRMx_transferred
- courier-usernames-dos(26998) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- GLSA-200608-06 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 18345 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20548 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20519 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.courier-mta.org/beta/patches/verp-fix/README.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- 21350 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1101 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- ADV-2006-2214 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- USN-294-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 20792 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1016248 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_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-2006-2659)Record last updated .