CVE-2005-0468
Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute…
- 7.5HighCVSS base score
- 27.1%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Heap-based buffer overflow in the env_opt_add function in telnet.c for various BSD-based Telnet clients allows remote attackers to execute arbitrary code via responses that contain a large number of characters that require escaping, which consumers more memory than allocated.
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.
Show the exploits1
Exploit-DB1 entry
- Multiple Vendor Telnet Client - Env_opt_add Heap Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 25303dos, linuxpublished 28 Mar 2005Verified
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
- 38 days later
· 38 days later
Published
- 19 years later
· 19 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 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 27.1% · top 1.9% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
18
- DSA-731 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-224-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-001-telnet.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- VU#341908 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 57755 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 12919 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- CLA-2005:962 (opens in a new tab)vendor-advisoryx_refsource_CONECTIVAx_transferred
- DSA-703 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 101665 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- MDKSA-2005:061 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- oval:org.mitre.oval:def:9640 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 14745 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2005:327 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2005:330 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 57761 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 20050328 Multiple Telnet Client env_opt_add() Buffer Overflow Vulnerability (opens in a new tab)third-party-advisoryx_refsource_IDEFENSEx_transferred
- 101671 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 17899 (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-2005-0469 (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-2005-0468)Record last updated .