Buffer Overflow Vulnerability in Fathom 2.4 by Concord Consortium
CVE-2018-25285

6.8MEDIUM

Key Information:

Vendor

Fathom

Status
Fathom
Vendor
CVE Published:
26 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25285?

Fathom 2.4 is susceptible to a buffer overflow vulnerability in the Authorization Code field, which can be exploited by local attackers. By submitting an oversized input string of up to 6000 bytes, attackers can initiate a denial of service condition that crashes the application. This vulnerability presents significant risks for users, potentially disrupting operations and accessibility.

Affected Version(s)

Fathom 2.4

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-2018-25285 - Proof of Concept

References

https://www.exploit-db.com/exploits/45294
exploit
https://fathom.concord.org/
product
https://fathom.concord.org/download/
product

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gionathan "John" Reale
.