What’s Vulnerable › Vulnerabilities

CVE-2018-25285: Fathom 2.4 Denial of Service via Authorization Code Buffer Overflow

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-26 · updated 2026-06-17
• Weakness: CWE-120

Description

Fathom 2.4 contains a buffer overflow vulnerability in the Authorization Code field that allows local attackers to crash the application by submitting an oversized input string. Attackers can paste a 6000-byte payload into the Authorization Code field and click Activate to trigger a denial of service condition.

Affected products

• Fathom: 2.4

References

• https://fathom.concord.org/
• https://fathom.concord.org/download/
• https://www.exploit-db.com/exploits/45294
• https://www.vulncheck.com/advisories/fathom-denial-of-service-via-authorization-code-buffer-overflow

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