CVE-2024-13176

What it is

Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation. Impact summary: A timing side-channel in ECDSA signature computations could allow recovering the private key by an attacker. However, measuring the timing would require either local access to the signing application or a very fast network connection with low latency. There is a timing signal of around 300 nanoseconds when the top word of the inverted ECDSA nonce value is zero. This can happen with significant probability only for some of the supported elliptic curves. In particular the NIST P-521 curve is affected. To be able to measure this leak, the attacker process must either be located in the same physical computer or must have a very fast network connection with low latency. For that reason the severity of this vulnerability is Low. The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.

At a glance

Exploitability

Can be exploited with physical access without logging in. High risk of data exposure.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-01-20 14:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-09 20:22 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.6% in the next 30 days (EPSS).
• Severity: 4.6 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2025-01-20 14:15 UTC

Last modified

2026-11-09 20:22 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-385

Record status

Analyzed

Affected

• OpenSSL < 1.0.2zl
• OpenSSL < 1.1.1zb
• OpenSSL < 3.0.16
• OpenSSL < 3.1.8
• OpenSSL < 3.2.4
• OpenSSL < 3.3.3
• OpenSSL < 3.4.1
• Netapp Active Iq Unified Manager

Attack profile CVSS 3.1 · 4.6

Attack vector

Physical

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2024-13176.md and follow it. Check whether this project is affected by CVE-2024-13176. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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