CVE-2016-4543: n/a vulnerability

CVE-2016-4543: The exif_process_IFD_in_JPEG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x...

The exif_process_IFD_in_JPEG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 does not validate IFD sizes, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via crafted header data.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 00:32 UTC (UTC+00:00)

Security readout for executives and security teams

Older PHP versions can mishandle malformed JPEG EXIF metadata. A remote attacker who can get an application to process a crafted image may crash the PHP process or trigger other unspecified effects. The main business risk is availability disruption in image-upload or metadata-processing services. Exposure is most likely where legacy PHP applications process untrusted JPEG uploads or read EXIF metadata. Internet-facing upload paths, media libraries, profile-photo features, and backend image ingestion jobs deserve review. Supported PHP versions are unlikely to be exposed to this specific flaw. Treat as a targeted remediation item for legacy PHP systems handling images. It is not KEV-listed in the provided sources, but exposed upload services should be patched promptly because remote denial of service can affect customer-facing availability. Mitigation focus: Upgrade PHP to 5.5.35, 5.6.21, 7.0.6, or a supported later release.; Apply patched PHP packages from the relevant Linux distribution advisory.; Prioritize systems that process uploaded JPEG images or EXIF metadata..

Prepared: Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 22, 2016, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

7Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149CVE reference · x_refsource_CONFIRM
GLSA-201611-22CVE reference · vendor-advisory, x_refsource_GENTOO
https://bugs.php.net/bug.php?id=72094CVE reference · x_refsource_CONFIRM
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722CVE reference · x_refsource_CONFIRM
https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=082aecfc3a753ad03be82cf14f03ac065723ec92CVE reference · x_refsource_CONFIRM
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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