CVE-2009-0388
Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of…
- 10.0HighCVSS base score
- 13.3%Exploitation in 30 daysEPSS · top 3.5% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 2Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of service (heap corruption and application crash) or possibly execute arbitrary code via a large length value in a message, related to the (a) ClientConnection::CheckBufferSize and (b) ClientConnection::CheckFileZipBufferSize functions in ClientConnection.cpp.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 2 Exploit-DB entries for it. 2 references of the record are tagged as an exploit.
Show the exploits4
Exploit-DB2 entries
- TightVNC - Authentication Failure Integer Overflow (PoC) (Exploit-DB entry) (opens in a new tab)
EDB-ID 8024dos, windowspublished 9 Feb 2009Verified
- UltraVNC/TightVNC (Multiple VNC Clients) - Multiple Integer Overflows (PoC) (Exploit-DB entry) (opens in a new tab)
EDB-ID 7990dos, windowspublished 4 Feb 2009Verified
References tagged exploit2 references
- 8024 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 7990 (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
- 2 days later
· 2 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 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 13.3% · top 3.5% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
References10
- http://forum.ultravnc.info/viewtopic.php?t=14654 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://vnc-tight.svn.sourceforge.net/viewvc/vnc-tight?view=rev&revision=3564 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-0321 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 33568 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20090203 CORE-2008-1009 - VNC Multiple Integer Overflows (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 8024 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://www.coresecurity.com/content/vnc-integer-overflows (opens in a new tab)x_refsource_MISCx_transferred
- ADV-2009-0322 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 7990 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 33807 (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-2009-0392 (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-2009-0388)Record last updated .