Out-of-Bounds Read Vulnerability in swftools by Swftools
CVE-2025-6271

4.8MEDIUM

Key Information:

Vendor

Swftools

Status
Swftools
Vendor
CVE Published:
19 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6271?

A security flaw has been identified in swftools, specifically in the wav_convert2mono function within the lib/wav.c component of wav2swf. This vulnerability allows local attackers to manipulate the program, potentially leading to out-of-bounds reading scenarios. Publicly disclosed information indicates that this exploit might be used in attacks, urging users to take preventive measures to safeguard their systems.

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Deploy the Patch

Affected Version(s)

swftools 0.9.0

swftools 0.9.1

swftools 0.9.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-6271 - Proof of Concept

References

https://vuldb.com/?id.313275
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313275
signaturepermissions-required
https://vuldb.com/?submit.593005
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

JJLeo (VulDB User)
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