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CVE-2009-1959
Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of…
Medium5.0EPSS 8.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 8.4% · top 5.0% 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: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (15)
- http://xorl.wordpress.com/2009/05/28/irssi-event_wallops-off-by-one-readwrite/ (opens in a new tab)x_refsource_MISCx_transferred
- 1022410 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- [oss-security] 20090529 CVE Request (irssi) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 35399 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.irssi.org/ChangeLog (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2009-7012 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- http://bugs.irssi.org/index.php?do=details&task_id=662 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 35685 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2009-1596 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- SUSE-SR:2009:012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-800-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 35812 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDVSA-2009:133 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- irssi-eventwallops-dos(51184) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 36152 (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)
- 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://trackcve.app/cve/CVE-2009-1959)Record last updated .