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CVE-2019-11044

26
FAUCET Score

CVE-2019-11044 is a vulnerability in PHP versions 7.2.x (below 7.2.26), 7.3.x (below 7.3.13), and 7.4.0 on Windows, where the link() function incorrectly processes filenames containing null bytes, treating them as string terminators. This flaw could allow attackers to bypass path validation checks in applications, potentially leading to unauthorized access to files. The vulnerability has a CVSS score of 7.5 (High), indicating a network-exploitable issue with low attack complexity and high confidentiality impact. There is currently no evidence of active exploitation, and no public exploit code or significant community discussion has been observed.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.2.0, <= 7.2.26CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.3.0, <= 7.3.13CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
7.4.0CPE matchmatch criteria
cpe:2.3:a:php:php:7.4.0:*:*:*:*:*:*:*
< 5.19.0CPE matchmatch criteria
cpe:2.3:a:tenable:securitycenter:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.12%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0512 is in the 85th percentile among its peer group of 51,466 CVEs.

Social Chatter

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-2019-11044

php: link function accepts filenames with embedded null byte and treats them as terminating at that byte on Windows

Nov 23, 2019

References

bugs.php.net / bug.php
ExploitMailing ListPatchVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F
security.netapp.com / advisory/ntap-20200103-0002
Third Party Advisory
tenable.com / security/tns-2021-14
Third Party Advisory