CVE-2011-4576

Name: CVE-2011-4576
Creator: NVD / NIST
Published: 2012-01-06T01:55:00.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 14.52%

Last modified Jun 16, 2026

CVE-2011-4576 is a vulnerability of currently unknown severity. The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer.. EPSS estimates a 14.52% chance of exploitation in the next 30 days.

Description

The SSL 3.0 implementation in OpenSSL before 0.9.8s and 1.x before 1.0.0f does not properly initialize data structures for block cipher padding, which might allow remote attackers to obtain sensitive information by decrypting the padding data sent by an SSL peer.

Metrics

EPSS Probability

14.52%

96.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-310

Affected Software

Vendor	Product	Versions
Openssl	Openssl	<= 0.9.8r
Openssl	Openssl	0.9.1c
Openssl	Openssl	0.9.2b
Openssl	Openssl	0.9.4
Openssl	Openssl	0.9.5
Openssl	Openssl	0.9.5a
Openssl	Openssl	0.9.6
Openssl	Openssl	0.9.6a
Openssl	Openssl	0.9.6b
Openssl	Openssl	0.9.6c
Openssl	Openssl	0.9.6d
Openssl	Openssl	0.9.6e
Openssl	Openssl	0.9.6f
Openssl	Openssl	0.9.6g
Openssl	Openssl	0.9.6h
Openssl	Openssl	0.9.6i
Openssl	Openssl	0.9.6j
Openssl	Openssl	0.9.6k
Openssl	Openssl	0.9.6l
Openssl	Openssl	0.9.6m
Openssl	Openssl	0.9.7
Openssl	Openssl	0.9.7a
Openssl	Openssl	0.9.7b
Openssl	Openssl	0.9.7c
Openssl	Openssl	0.9.7d
Openssl	Openssl	0.9.7e
Openssl	Openssl	0.9.7f
Openssl	Openssl	0.9.7g
Openssl	Openssl	0.9.7h
Openssl	Openssl	0.9.7i
Openssl	Openssl	0.9.7j
Openssl	Openssl	0.9.7k
Openssl	Openssl	0.9.7l
Openssl	Openssl	0.9.7m
Openssl	Openssl	0.9.8
Openssl	Openssl	0.9.8a
Openssl	Openssl	0.9.8b
Openssl	Openssl	0.9.8c
Openssl	Openssl	0.9.8d
Openssl	Openssl	0.9.8e
Openssl	Openssl	0.9.8f
Openssl	Openssl	0.9.8g
Openssl	Openssl	0.9.8h
Openssl	Openssl	0.9.8i
Openssl	Openssl	0.9.8j
Openssl	Openssl	0.9.8k
Openssl	Openssl	0.9.8l
Openssl	Openssl	0.9.8m
Openssl	Openssl	0.9.8n
Openssl	Openssl	0.9.8o

Showing 50 of 58 affected configurations. See NVD for the full list.

References

Timeline

Published: Jan 6, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4576?

How severe is CVE-2011-4576?

Severity scoring for CVE-2011-4576 is pending analysis. The EPSS model estimates a 14.52% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4576?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4576?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST