Is CVE-2011-4566 being actively exploited?

CVE-2011-4566 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4566?

CVE-2011-4566 has a CVSS 2.0 base score of 6.4 (MEDIUM).

CVE-2011-4566

MEDIUM · CVSS 6.4EPSS 6.6%EU EUVD

Integer overflow in the exif_process_IFD_TAG function in exif.c in the exif extension in PHP 5.4.0beta2 on 32-bit platforms allows remote attackers to read the contents of arbitrary memory locations or cause a denial of service via a crafted offset_val value in an EXIF header in a JPEG file, a different vulnerability than CVE-2011-0708.

Key facts

CVSS score: 6.4 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:P
Weakness (CWE): CWE-189
EPSS score: 6.6% (94th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4492)
Published: November 29, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4492 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
debian / debian linux
php / php
php / php

References

http://lists.apple.com/archives/security-announce/2012/May/msg00001.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html(Mailing List, Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2012-0071.html(Third Party Advisory)
http://secunia.com/advisories/47253(Third Party Advisory)
http://secunia.com/advisories/48668(Third Party Advisory)
http://support.apple.com/kb/HT5281(Third Party Advisory)
http://www.debian.org/security/2012/dsa-2399(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:197(Third Party Advisory)
http://www.redhat.com/support/errata/RHSA-2012-0019.html(Third Party Advisory)
http://www.securityfocus.com/bid/50907(Third Party Advisory, VDB Entry)
https://bugs.php.net/bug.php?id=60150(Exploit, Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/71612(Third Party Advisory, VDB Entry)
https://www.ubuntu.com/usn/USN-1307-1/(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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