CVE-2007-0756
Chicken of the VNC (cotv) 2.0 allows remote attackers to cause a denial of service (application crash) via a large computer-name size…
- 7.8HighCVSS base score
- 4.5%Exploitation in 30 daysEPSS · top 8.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Chicken of the VNC (cotv) 2.0 allows remote attackers to cause a denial of service (application crash) via a large computer-name size value in a ServerInit packet, which triggers a failed malloc and a resulting NULL dereference.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- Chicken of the VNC 2.0 - 'NULL-pointer' Remote Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 3257dos, osxpublished 2 Feb 2007Verified
References tagged exploit1 reference
- 3257 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 1 day later
· 1 day later
Published
- 18 years later
· 18 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 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 4.5% · top 8.5% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
7
- 22372 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20070202 Chicken of the VNC 2.0 remote DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 3257 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 2220 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 20070426 Re: Chicken of the VNC 2.0 remote DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 33637 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- cotv-serverinit-dos(32166) (opens in a new tab)vdb-entryx_refsource_XFx_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-2007-0753 (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-2007-0756)Record last updated .