SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-3141

Use-after-free vulnerability in wddx.c in the WDDX extension in PHP before 5.5.33 and 5.6.x before 5.6.19 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact by…

CRITICAL 9.8EPSS 36.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 36.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Use-after-free vulnerability in wddx.c in the WDDX extension in PHP before 5.5.33 and 5.6.x before 5.6.19 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact by triggering a wddx_deserialize call on XML data containing a crafted var element.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
36.01% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
apple/mac os x · php/php
Source
security@opentext.com
EPSS trend
0%20%40%21 September 2026: 37.92%22 September 2026: 36.01%4 November 2026: 36.01%21 September 20264 November 2026

EPSS moved from 37.9% on 21 September 2026 to 36.0% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.