link() silently truncates after a null byte on Windows
Published Dec 23, 2019
7.5
HIGHCVSS 3.1
EPSS 5.12%
Description
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.
Affected products
-
- Version 7.2.xStatusaffectedConstraints<7.2.26
- Version 7.3.xStatusaffectedConstraints<7.3.13
- Version 7.4.xStatusaffectedConstraints<7.4.1
- Version
Configuration 1
Configuration 2
- < 5.19.0
Configuration 3
- 30
- 31
No data.
Red Hat Enterprise Linux 5
php
Not affected
Red Hat Enterprise Linux 5
php53
Not affected
Red Hat Enterprise Linux 6
php
Not affected
Red Hat Enterprise Linux 7
php
Not affected
Red Hat Enterprise Linux 8
php:7.2/php
Not affected
Red Hat Enterprise Linux 8
php:7.3/php
Not affected
Red Hat Software Collections
rh-php72-php
Not affected
Red Hat Software Collections
rh-php73-php
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | php | Not affected | n/a |
| Red Hat Enterprise Linux 5 | php53 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | php | Not affected | n/a |
| Red Hat Enterprise Linux 7 | php | Not affected | n/a |
| Red Hat Enterprise Linux 8 | php:7.2/php | Not affected | n/a |
| Red Hat Enterprise Linux 8 | php:7.3/php | Not affected | n/a |
| Red Hat Software Collections | rh-php72-php | Not affected | n/a |
| Red Hat Software Collections | rh-php73-php | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8 as the flaw only affects Windows builds. See CVE-2006-7243 for the Linux version of this flaw.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (38 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 5.12% (0.05124) | 92.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.12% (0.05124) | 91.27th | v5 (v2026.06.15) |
| Mar 4, 2026 | 7.97% (0.07969) | 91.92th | v4 (v2025.03.14) |
| Mar 1, 2026 | 6.72% (0.06717) | 91.13th | v4 (v2025.03.14) |
| Feb 4, 2026 | 7.97% (0.07969) | 91.86th | v4 (v2025.03.14) |
| Feb 1, 2026 | 6.72% (0.06717) | 91.08th | v4 (v2025.03.14) |
| Jan 4, 2026 | 7.97% (0.07969) | 91.80th | v4 (v2025.03.14) |
| Jan 1, 2026 | 6.72% (0.06717) | 91.01th | v4 (v2025.03.14) |
| Dec 28, 2025 | 7.97% (0.07969) | 91.78th | v4 (v2025.03.14) |
| Dec 27, 2025 | 5.43% (0.05432) | 89.91th | v4 (v2025.03.14) |
| Dec 4, 2025 | 7.97% (0.07969) | 91.73th | v4 (v2025.03.14) |
| Dec 1, 2025 | 6.72% (0.06717) | 90.94th | v4 (v2025.03.14) |
| Nov 30, 2025 | 7.97% (0.07969) | 91.73th | v4 (v2025.03.14) |
| Nov 21, 2025 | 6.29% (0.06289) | 90.54th | v4 (v2025.03.14) |
| Nov 18, 2025 | 1.89% (0.01892) | 81.74th | v4 (v2025.03.14) |
| Oct 28, 2025 | 6.29% (0.06289) | 90.51th | v4 (v2025.03.14) |
| Oct 27, 2025 | 4.25% (0.04255) | 88.32th | v4 (v2025.03.14) |
| Oct 1, 2025 | 5.37% (0.05369) | 89.72th | v4 (v2025.03.14) |
| Jul 30, 2025 | 4.23% (0.04226) | 88.32th | v4 (v2025.03.14) |
| Jul 22, 2025 | 6.41% (0.06408) | 90.60th | v4 (v2025.03.14) |
| Jul 16, 2025 | 8.17% (0.08169) | 91.77th | v4 (v2025.03.14) |
| Jul 11, 2025 | 5.49% (0.05486) | 89.76th | v4 (v2025.03.14) |
| May 1, 2025 | 3.21% (0.03208) | 86.37th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.35% (0.04348) | 87.87th | v4 (v2025.03.14) |
| Mar 29, 2025 | 24.83% (0.24832) | 93.79th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.35% (0.04348) | 88.18th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.18% (0.00175) | 55.05th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.18% (0.00175) | 54.52th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.14% (0.00144) | 49.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.20% (0.00200) | 56.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.35% (0.15351) | 91.59th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.36% (0.05363) | 79.74th | v5 (v2026.06.15) |
| Jan 6, 2022 | 5.36% (0.05363) | 79.54th | v1 |
| Sep 1, 2021 | 1.25% (0.01247) | 68.62th | v1 |
| Jul 23, 2021 | 1.25% (0.01247) | 0.00th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (9)
- https://access.redhat.com/security/cve/CVE-2019-11044 Vendor Advisory
- https://bugs.php.net/bug.php?id=78862 x_refsource_MISCExploitMailing ListPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1789069 Issue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-11044
- https://security.netapp.com/advisory/ntap-20200103-0002/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-11044
- https://www.tenable.com/security/tns-2021-14 x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-11044 | Vendor Advisory | |
| https://bugs.php.net/bug.php?id=78862 | x_refsource_MISCExploitMailing ListPatchVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1789069 | Issue Tracking | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/ | vendor-advisoryx_refsource_FEDORA | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-11044 | ||
| https://security.netapp.com/advisory/ntap-20200103-0002/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-11044 | ||
| https://www.tenable.com/security/tns-2021-14 | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.