CVE-2024-53846

ssl fails to validate incorrect extened key usage

MEDIUM
5.5
CVSS Score
Published: December 5, 2024 at 05:02 PM UTC
Updated: June 17, 2026 at 08:09 AM UTC
1 product affected across 1 vendorErlang /otp

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang, and a set of design principles for Erlang programs. A regression was introduced into the ssl application of OTP starting at OTP-25.3.2.8, OTP-26.2, and OTP-27.0, resulting in a server or client verifying the peer when incorrect extended key usage is presented (i.e., a server will verify a client if they have server auth ext key usage and vice versa).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 25.3.2.16v ≤ 25.3.2.8v ≤ 26.2.5.6v ≤ 27.1.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-295

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