#VU106951 Uncontrolled memory allocation in otp - CVE-2025-26618

Vulnerability identifier: #VU106951

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-26618

CWE-ID: CWE-789

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
otp
Other software / Other software solutions

Vendor: erlang

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of SFTP packets. A remote attacker can send multiple SFTP packets to the application and consume large amount of memory, resulting in a denial of service.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

otp: 25.0 - 25.3.2.17, 26.0 - 26.2.5.8, 27.0 - 27.2.3

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External links
https://erlang.org/download/OTP-27.2.4.README.md
https://github.com/erlang/otp/commit/0ed2573cbd55c92e9125c9dc70fa1ca7fed82872
https://github.com/erlang/otp/security/advisories/GHSA-78cv-45vx-q6fr

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.