#VU106381 Uncontrolled Memory Allocation in otp - CVE-2025-30211

Vulnerability identifier: #VU106381

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2025-30211

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 implementation does not verify RFC specified limits on algorithm names provided in KEX init message. A remote attacker can cause a denial of service (DoS) condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

otp: 25.3.2 - 25.3.2.18, 26.2.5 - 26.2.5.9, 27.3

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External links
https://github.com/erlang/otp/security/advisories/GHSA-vvr3-fjhh-cfwc

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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.