CVE-2009-0041
IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business Edition A.x.x, B.x.x…
- 5.0MediumCVSS base score
- 2.7%Exploitation in 30 daysEPSS · top 14% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business Edition A.x.x, B.x.x before B.2.5.7, C.1.x.x before C.1.10.4, and C.2.x.x before C.2.1.2.1; and s800i 1.2.x before 1.3.0 responds differently to a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.
Timeline
ID reserved
By mitre
- 8 days later
· 8 days later
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 | Medium5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 2.7% · top 14% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
11
- GLSA-200905-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 20090108 AST-2009-001: Information leak in IAX2 authentication (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 33453 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 4910 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 33174 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 37677 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1952 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 1021549 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://downloads.digium.com/pub/security/AST-2009-001.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-0063 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 34982 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2009-0050 (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://cveledger.app/cve/CVE-2009-0041)Record last updated .