CVE-2003-0955: n/a vulnerability

CVE-2003-0955: OpenBSD kernel 3.3 and 3.4 allows local users to cause a denial of service (kernel panic) and possibly exec...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 02:12 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2003-0955 affects OpenBSD 3.3 and 3.4 kernels. A local user could crash the system, and sources note possible arbitrary code execution in OpenBSD 3.4. This matters mainly for organizations still operating legacy OpenBSD systems or appliances based on these releases. Exposure is limited to OpenBSD 3.3 and 3.4 systems where untrusted or low-privileged local users can run programs. Most modern environments are unlikely to be affected unless they retain legacy systems, lab hosts, or embedded appliances based on these versions. Low for organizations without OpenBSD 3.3 or 3.4. High priority if such legacy systems support critical services, because a local user could crash the host and potentially gain deeper control. Mitigation focus: Identify any OpenBSD 3.3 or 3.4 systems in production, labs, or appliances.; Apply the relevant OpenBSD vendor errata or patch where still applicable.; If patching is impractical, retire or isolate affected legacy systems..

Prepared: Jul 12, 2026, 01:19 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 21, 2003, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

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