# CVE-2003-0955

## Summary

- **CVE ID:** CVE-2003-0955
- **Severity:** UNKNOWN
- **CVSS Score:** 0.02
- **CWE:** N/A
- **Published:** Nov 21, 2003
- **Last Modified:** Mar 16, 2026

## Description

OpenBSD kernel 3.3 and 3.4 allows local users to cause a denial of service (kernel panic) and possibly execute arbitrary code in 3.4 via a program with an invalid header that is not properly handled by (1) ibcs2_exec.c in the iBCS2 emulation (compat_ibcs2) or (2) exec_elf.c, which leads to a stack-based buffer overflow.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.openbsd.org/errata33.html)
- [CNA](http://marc.info/?l=openbsd-security-announce&m=106917441524978&w=2)
- [CNA](http://www.securityfocus.com/bid/8978)
- [CNA](http://marc.info/?l=openbsd-security-announce&m=106808820119679&w=2)
- [CNA](http://lists.grok.org.uk/pipermail/full-disclosure/2003-November/013315.html)
- [CNA](ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.4/common/005_exec.patch)
- [CNA](http://www.guninski.com/msuxobsd2.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.44%
- **EPSS Percentile:** 62.9

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