Heap-based Buffer Overflow in GNU Binutils Linker Affects Version 2.45
CVE-2025-11083

4.8MEDIUM

Key Information:

Vendor

Gnu
Status
Binutils
Vendor
CVE Published:
27 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11083?

A local vulnerability in GNU Binutils version 2.45 has been identified, specifically affecting the elf_swap_shdr function in the bfd/elfcode.h library of the Linker component. The flaw enables a heap-based buffer overflow, allowing potential attackers to manipulate memory in a way that could lead to unauthorized actions or crashes. The exploit has been made public, emphasizing the need for immediate patching. Users are advised to upgrade to version 2.46, which addresses this serious issue with the patch identified as 9ca499644a21ceb3f946d1c179c38a83be084490.

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-2025-11083 - Proof of Concept

References

https://vuldb.com/?id.326124
vdb-entrytechnical-description
https://vuldb.com/?ctiid.326124
signaturepermissions-required
https://vuldb.com/?submit.661277
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

JJLeo (VulDB User)
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