Is CVE-2016-7131 in the CISA KEV catalog?

No. CVE-2016-7131 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-7131?

CVE-2016-7131 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2016-7131?

CVE-2016-7131 has an EPSS score of 8.83% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-7131?

Upgrade libapache2-mod-php5 on ubuntu 14.04 to 5.5.9+dfsg-1ubuntu4.20 or later. Fixes are available for 16 affected products.

CVE & CISA-KEV Catalog

CVE-2016-7131

HIGHEPSS 95th pctl

7.5

CVSS v3

NVD

Description

ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly have unspecified other impact via a malformed wddxPacket XML document that is mishandled in a wddx_deserialize call, as demonstrated by a tag that lacks a < (less than) character.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

libapache2-mod-php5Ubuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

libapache2-mod-php7.0Ubuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php5Ubuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php5-cgiUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php5-cliUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php5-curlUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php5-fpmUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php5-gdUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php5-mysqlndUbuntu

Fixed in:5.5.9+dfsg-1ubuntu4.20USN-3095-1

php7.0Ubuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php7.0-cgiUbuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php7.0-cliUbuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php7.0-curlUbuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php7.0-fpmUbuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php7.0-gdUbuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

php7.0-mysqlUbuntu

Fixed in:7.0.8-0ubuntu0.16.04.3USN-3095-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

8.83%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Patch2

Exploit1

bugs.php.net

Third-Party Advisory5

Mailing List1

openwall.com

Release Notes2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.