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 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.
Key facts
- CVSS score
- 10.0 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-189
- EPSS score
- 13.3% (96th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0392)
- Published
- February 4, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0392 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- tightvnc / tightvnc
- ultravnc / ultravnc
- ultravnc / ultravnc
References
- http://forum.ultravnc.info/viewtopic.php?t=14654
- http://secunia.com/advisories/33807
- http://vnc-tight.svn.sourceforge.net/viewvc/vnc-tight?view=rev&revision=3564
- http://www.coresecurity.com/content/vnc-integer-overflows(Exploit)
- http://www.securityfocus.com/archive/1/500632/100/0/threaded
- http://www.securityfocus.com/bid/33568(Exploit, Patch)
- http://www.vupen.com/english/advisories/2009/0321
- http://www.vupen.com/english/advisories/2009/0322
- https://www.exploit-db.com/exploits/7990
- https://www.exploit-db.com/exploits/8024
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain