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CVE-2024-39844In ZNC before 1.9.1, remote code execution can occur in modtcl via a KICK.
- 9.8CriticalCVSS base score
- 3.9%Exploitation in 30 daysEPSS · top 9.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In ZNC before 1.9.1, remote code execution can occur in modtcl via a KICK.
Timeline
ID reserved
By mitre
- 4 days later
· 4 days later
Published
- 30 days later
· 30 days 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.7% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
References5
- https://wiki.znc.in/Category:ChangeLog (opens in a new tab)x_transferred
- https://github.com/znc/znc/releases/tag/znc-1.9.1 (opens in a new tab)x_transferred
- https://wiki.znc.in/ChangeLog/1.9.1 (opens in a new tab)x_transferred
- https://www.openwall.com/lists/oss-security/2024/07/03/9 (opens in a new tab)x_transferred
- [oss-security] 20240703 CVE-2024-39844: ZNC modtcl RCE (opens in a new tab)mailing-listx_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-2024-38265 (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-2024-39844)Record last updated .