# CVE-2003-0688

## Summary

- **CVE ID:** CVE-2003-0688
- **Severity:** UNKNOWN
- **CVSS Score:** 0.07
- **CWE:** N/A
- **Published:** Sep 3, 2003
- **Last Modified:** Mar 16, 2026

## Description

The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.mandriva.com/security/advisories?name=MDKSA-2003:086)
- [CNA](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A597)
- [CNA](ftp://patches.sgi.com/support/free/security/advisories/20030803-01-P)
- [CNA](http://www.sendmail.org/dnsmap1.html)
- [CNA](http://www.redhat.com/support/errata/RHSA-2003-265.html)
- [CNA](http://www.novell.com/linux/security/advisories/2003_035_sendmail.html)
- [CNA](http://www.kb.cert.org/vuls/id/993452)
- [CNA](http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000727)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.71%
- **EPSS Percentile:** 82.1

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