# CVE-2002-0639

## Summary

- **CVE ID:** CVE-2002-0639
- **Severity:** UNKNOWN
- **CVSS Score:** 1.42
- **CWE:** N/A
- **Published:** Apr 2, 2003
- **Last Modified:** Mar 16, 2026

## Description

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication) when OpenSSH is using SKEY or BSD_AUTH authentication.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.debian.org/security/2002/dsa-134)
- [CNA](http://www.iss.net/security_center/static/9169.php)
- [CNA](http://archives.neohapsis.com/archives/bugtraq/2002-06/0335.html)
- [CNA](http://marc.info/?l=bugtraq&m=102514371522793&w=2)
- [CNA](http://www.osvdb.org/6245)
- [CNA](http://www.cert.org/advisories/CA-2002-18.html)
- [CNA](http://marc.info/?l=bugtraq&m=102521542826833&w=2)
- [CNA](http://www.securityfocus.com/bid/5093)
- [CNA](ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-030.0.txt)
- [CNA](http://www.linuxsecurity.com/advisories/other_advisory-2177.html)
- [CNA](http://www.kb.cert.org/vuls/id/369347)
- [CNA](http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000502)
- [CNA](http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX0206-195)
- [CNA](http://www.mandrakesoft.com/security/advisories?name=MDKSA-2002:040)
- [CNA](http://marc.info/?l=bugtraq&m=102514631524575&w=2)
- [CNA](https://web.archive.org/web/20080622172542/www.iss.net/threats/advise123.html)
- [CNA](https://twitter.com/RooneyMcNibNug/status/1152332585349111810)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 35.51%
- **EPSS Percentile:** 97.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._