CVE-2012-1180

CVE-2012-1180 is a medium-severity vulnerability in F5 Nginx with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-416.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 10% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-416
• Affected product: F5 Nginx
• Published: 2012-04-17
• Last modified: 2026-06-16

Description

Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from process memory via a crafted backend response, in conjunction with a client request.

Frequently asked questions

What is CVE-2012-1180?

Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from process memory via a crafted backend response, in conjunction with a client request.

How severe is CVE-2012-1180?

CVE-2012-1180 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2012-1180 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-1180?

CVE-2012-1180 primarily affects F5 Nginx. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-1180?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-1180 published?

CVE-2012-1180 was published on 2012-04-17 and last updated on 2026-06-16.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077966.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-March/076646.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-March/076671.html
• http://nginx.org/download/patch.2012.memory.txt
• http://nginx.org/en/security_advisories.html
• http://osvdb.org/80124
• http://seclists.org/bugtraq/2012/Mar/65
• http://secunia.com/advisories/48465
• http://secunia.com/advisories/48577
• http://security.gentoo.org/glsa/glsa-201203-22.xml
• http://trac.nginx.org/nginx/changeset/4530/nginx
• http://trac.nginx.org/nginx/changeset/4531/nginx
• http://www.debian.org/security/2012/dsa-2434
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:043
• http://www.openwall.com/lists/oss-security/2012/03/15/5
• http://www.openwall.com/lists/oss-security/2012/03/15/9
• http://www.securityfocus.com/bid/52578
• http://www.securitytracker.com/id?1026827
• https://bugzilla.redhat.com/show_bug.cgi?id=803856
• https://exchange.xforce.ibmcloud.com/vulnerabilities/74191
• https://hermes.opensuse.org/messages/14173096

Affected products (5)

• cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:16:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:17:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*

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Other CWE-416 (Use After Free) vulnerabilities

• CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
• CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
• CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
• CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
• CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
• CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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