CVE-2011-0766

What it is

The random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP ssh library before R14B03, uses predictable seeds based on the current time, which makes it easier for remote attackers to guess DSA host and SSH session keys.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

3.1% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2011-05-31 20:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:28 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.1% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2011-05-31 20:55 UTC

Last modified

2026-06-16 23:28 UTC

Exploit probability

3.1% · EPSS, next 30 days

Weakness

CWE-310

Record status

Modified

Affected

• Erlang Crypto ≤ 2.0.2.1
• Erlang erlang\/otp r11b-5
• Erlang erlang\/otp r12b-5
• Erlang erlang\/otp r13b
• Erlang erlang\/otp r13b02-1
• Erlang erlang\/otp r13b03
• Erlang erlang\/otp r13b04
• Erlang erlang\/otp r14a

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Complete

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-2011-0766.md and follow it. Check whether this project is affected by CVE-2011-0766. 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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