What’s Vulnerable › Vulnerabilities

CVE-2025-6271: swftools wav2swf wav.c wav_convert2mono out-of-bounds

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-06-19 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability, which was classified as problematic, was found in swftools up to 0.9.2. This affects the function wav_convert2mono in the library lib/wav.c of the component wav2swf. The manipulation leads to out-of-bounds read. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.

Affected products

• swftools: before 0.9.2 — fixed in 0.9.2

How to fix

Upgrade to a fixed version: swftools 0.9.2. Check the vendor advisory for mitigations.

References

• https://github.com/swftools/swftools/issues/239
• https://github.com/user-attachments/files/19415662/wav2swf_crash.txt
• https://vuldb.com/?ctiid.313275
• https://vuldb.com/?id.313275
• https://vuldb.com/?submit.593005
• https://github.com/swftools/swftools/issues/239

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