Denial of service in erlang otp

1) Uncontrolled Memory Allocation

EUVDB-ID: #VU106381

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 - Uncontrolled Memory Allocation

Exploit availability: No

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 - 27.3

CPE2.3

• cpe:2.3:a:erlang:otp:25.3.2.18:*:*:*:*:*:*:*
• cpe:2.3:a:erlang:otp:26.2.5.9:*:*:*:*:*:*:*
• cpe:2.3:a:erlang:otp:27.3:*:*:*:*:*:*:*

External links

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

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.