Integer overflow in ext/shmop/shmop.c in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (crash) and possibly read sensitive memory via a large third argument to the shmop_read function.
CVE-2011-1092
- No confirmed exploitation signals yet
A fix is available — apply it.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 96.8%
- KEV
- Not listed
Published
March 15, 2011
Last Modified
April 29, 2026
References (36)
- secalert@redhathttp://bugs.php.net/bug.php?id=54193
- secalert@redhathttp://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
- secalert@redhathttp://marc.info/?l=bugtraq&m=133469208622507&w=2
- secalert@redhathttp://securityreason.com/securityalert/8130
- secalert@redhathttp://support.apple.com/kb/HT5002
- secalert@redhathttp://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/shmop/shmop.c?r1=306939&r2=309018&pathrev=309018
- secalert@redhathttp://www.exploit-db.com/exploits/16966
- secalert@redhathttp://www.mandriva.com/security/advisories?name=MDVSA-2011:052
- secalert@redhathttp://www.mandriva.com/security/advisories?name=MDVSA-2011:053
- secalert@redhathttp://www.openwall.com/lists/oss-security/2011/03/08/11
- secalert@redhathttp://www.openwall.com/lists/oss-security/2011/03/08/9
- secalert@redhathttp://www.php.net/ChangeLog-5.php
- secalert@redhathttp://www.php.net/archive/2011.php
- secalert@redhathttp://www.php.net/releases/5_3_6.php
- secalert@redhathttp://www.securityfocus.com/bid/46786
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libapache2-mod-php5 (5.3.5-1ubuntu7.1) @ natty | 2026-05-29 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 7× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-06 16:23 UTCEPSS rescore
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- 2026-05-29 08:30 UTCEG score recompute
- 2026-05-29 08:30 UTCVendor advisory
- 2026-05-29 08:30 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
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Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-16966✓ verifiedFirst seen Mar 12, 2011
PHP 5.3.6 - 'shmop_read()' Integer Overflow Denial of Service
Open source ↗
Frequently asked(4)
What is CVE-2011-1092?
When was CVE-2011-1092 disclosed?
Is CVE-2011-1092 actively exploited?
How do I remediate CVE-2011-1092?
Dependency Blast Radius
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