CVE-2005-0308: Buffer overflow in the wsprintf function in W32Dasm 8.93 and earlier allows remote attackers to execute arbitr

This week

HIGH 7.5DOWNGRADE

CVE-2005-0308 is a high-severity flaw (CVSS 7.5) affecting w32dasm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the wsprintf function in W32Dasm 8.93 and earlier allows remote attackers to execute arbitrary code via a large import or export function name.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	68.9% (top 1%)
CISA exploited list	No
Published	2005-01-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ursoftware

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-01-24 05:00 UTCPublished CVE record published
2026-06-16 22:10 UTCUpdated Record last modified

ursoftware w32dasm DOWNGRADE

Affected: 8.94

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.94

1. Check installed version

apt-cache policy w32dasm || rpm -q w32dasm || w32dasm --version

2. No fixed release: DOWNGRADE to a release before 8.94 (Debian / Ubuntu)

apt-cache madison w32dasm sudo apt install w32dasm=<VERSION_BEFORE_8.94> sudo apt-mark hold w32dasm

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list w32dasm sudo dnf downgrade w32dasm-<VERSION_BEFORE_8.94> sudo dnf versionlock add w32dasm

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: URSoft W32Dasm 8.93 - Disassembler Function Buffer Overflow (Metasploit)
Metasploit: URSoft W32Dasm Disassembler Function Buffer Overflow

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2005-0308?

w32dasm: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-0308 being exploited?

CVE-2005-0308 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2005-0308 affect?

CVE-2005-0308 affects w32dasm. Severity is high (CVSS 7.5). Buffer overflow in the wsprintf function in W32Dasm 8.93 and earlier allows remote attackers to execute arbitrary code via a large import or export function name.

How urgent is CVE-2005-0308?

Priority 56/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

References

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