Heap-Based Buffer Overflow in 9fans Plan9port Library
CVE-2025-7208

5.1MEDIUM

Key Information:

Vendor

9fans

Status
Plan9port
Vendor
CVE Published:
9 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7208?

A vulnerability has been identified in the 9fans Plan9port library that affects the edump function within the x509.c file, leading to a heap-based buffer overflow. This flaw allows for potential exploitability, as attackers could manipulate the function's behavior to execute arbitrary code. With the software utilizing a rolling release model, specific version details affected by this vulnerability are not consistently provided. It is crucial to apply the patch identified as b3e06559475b0130a7a2fb56ac4d131d13d2012f to mitigate the risk associated with this vulnerability.

Affected Version(s)

plan9port 9da5b44

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-2025-7208 - Proof of Concept

References

https://vuldb.com/?id.259053
vdb-entrytechnical-description
https://vuldb.com/?ctiid.259053
signaturepermissions-required
https://vuldb.com/?submit.304567
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-7208 : Heap-Based Buffer Overflow in 9fans Plan9port Library