In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 on Windows, PHP link() function accepts filenames with embedded \0 byte and treats them as terminating at that byte. This could lead to security vulnerabilities, e.g. in applications checking paths that the code is allowed to access.
CVE-2019-11044
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 40(Track)EG Risk 40/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation5% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 5%
- EPSS %ILE
- 92%
- KEV
- Not listed
Published
December 23, 2019
Last Modified
August 17, 2026
Advisory Details (5)
Auto-updated Aug 17, 2026[R2] Tenable.sc 5.19.0 Fixes Multiple Third-party Vulnerabilities - Security Advisory | Tenable®
https://www.tenable.com/security/tns-2021-14[SECURITY] Fedora 31 Update: php-7.3.13-1.fc31 - package-announce - Fedora mailing-lists
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/[SECURITY] Fedora 30 Update: php-7.3.13-1.fc30 - package-announce - Fedora mailing-lists
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/PHP :: Sec Bug #78862 :: link() silently truncates after a null byte on Windows
https://bugs.php.net/bug.php?id=78862Vendor Advisories for CVE-2019-11044(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 23× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 140 total refreshes for this CVE.
- 2026-09-18 19:22 UTCEPSS rescore
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- 2026-08-17 14:57 UTCEG score recompute
- 2026-08-17 14:56 UTCGHSA enrichment
- 2026-08-17 14:56 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
- 2026-08-17 13:43 UTCEPSS rescore
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- 2026-07-23 01:38 UTCEG score recompute
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- 2026-07-19 23:19 UTCOSV refresh
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- 2026-07-02 14:00 UTCOSV refresh
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- 2026-06-21 01:57 UTCEPSS rescore
Frequently asked(5)
What is CVE-2019-11044?
When was CVE-2019-11044 disclosed?
Is CVE-2019-11044 actively exploited?
What is the CVSS score of CVE-2019-11044?
How do I remediate CVE-2019-11044?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2019-11044
Is Your Infrastructure Affected by CVE-2019-11044?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.