Heap-Based Buffer Overflow in GNU Binutils Affecting Local Users
CVE-2025-7545

4.8MEDIUM

Key Information:

Vendor

Gnu
Status
Binutils
Vendor
CVE Published:
13 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7545?

A vulnerability has been identified in GNU Binutils version 2.45, specifically within the copy_section function in the objcopy.c file. This issue allows for a heap-based buffer overflow, which could potentially be exploited by a local attacker. The vulnerability has been publicly disclosed, making it crucial for users to apply the provided patch (08c3cbe5926e4d355b5cb70bbec2b1eeb40c2944) to mitigate the risk. Users are strongly advised to assess their systems and implement necessary security measures to ensure protection against this vulnerability.

Affected Version(s)

Binutils 2.45

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-2025-7545 - Proof of Concept

References

https://vuldb.com/?id.316243
vdb-entrytechnical-description
https://vuldb.com/?ctiid.316243
signaturepermissions-required
https://vuldb.com/?submit.614355
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
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

arthurx (VulDB User)
.
CVE-2025-7545 : Heap-Based Buffer Overflow in GNU Binutils Affecting Local Users