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CVE-2015-8616

22
FAUCET Score

CVE-2015-8616 is a use-after-free vulnerability in the Collator::sortWithSortKeys function of PHP 7.x before 7.0.1, allowing remote attackers to cause a denial of service or potentially other unspecified impact. With a CVSS score of 8.6 (High), it can be exploited over the network with low attack complexity, leading to high availability impact and some confidentiality and integrity impact. Despite its severity, there is no known active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.0.0CPE matchmatch criteria
cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.17%
Probability of exploitation in next 30 days
EPSS Percentile
80.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0217 is in the 65th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2015-8616Low

php: Use after free vulnerability in Collator::sortWithSortKeys

Dec 3, 2015

References

php.net / ChangeLog-7.php
Vendor Advisory
bugs.php.net / bug.php
Exploit