CVE-2011-3336

Name: CVE-2011-3336
Creator: NVD / NIST
Published: 2020-02-12T20:15:13.353+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 6.49%

Last modified Jun 16, 2026

CVE-2011-3336 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. regcomp in the BSD implementation of libc is vulnerable to denial of service due to stack exhaustion.. EPSS estimates a 6.49% chance of exploitation in the next 30 days.

Description

regcomp in the BSD implementation of libc is vulnerable to denial of service due to stack exhaustion.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

6.49%

92.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Php	Php	>= 5.3.0, <= 5.3.10
Apple	Mac Os X	>= 10.6.0, <= 10.7.2
Freebsd	Freebsd	8.2
Openbsd	Openbsd	5.0

References

http://seclists.org/fulldisclosure/2014/Mar/166Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/50541Exploit, Third Party Advisory, VDB Entry
https://cxsecurity.com/issue/WLB-2011110082Exploit, Third Party Advisory
https://www.securityfocus.com/archive/1/520390Exploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2014/Mar/166Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/50541Exploit, Third Party Advisory, VDB Entry
https://cxsecurity.com/issue/WLB-2011110082Exploit, Third Party Advisory
https://www.securityfocus.com/archive/1/520390Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Feb 12, 2020
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-3336?

regcomp in the BSD implementation of libc is vulnerable to denial of service due to stack exhaustion.

How severe is CVE-2011-3336?

CVE-2011-3336 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.49% probability of exploitation in the next 30 days.

How do I fix CVE-2011-3336?

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-2011-3336?

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

Scan your code now

Source: NVD / NIST