The escapeshellarg function in ext/standard/exec.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 on Windows allows remote attackers to execute arbitrary OS commands via a crafted string to an application that accepts command-line arguments for a call to the PHP system function
Published May 16, 2016
9.8
CRITICALCVSS 3.0
EPSS 6.00%
Description
The escapeshellarg function in ext/standard/exec.c in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 on Windows allows remote attackers to execute arbitrary OS commands via a crafted string to an application that accepts command-line arguments for a call to the PHP system function.
Affected products
No data.
- ≤ 5.4.41
- 5.5.0
- 5.5.1
- 5.5.2
- 5.5.3
- 5.5.4
- 5.5.5
- 5.5.6
- 5.5.7
- 5.5.8
- 5.5.9
- 5.5.10
- 5.5.11
- 5.5.12
- 5.5.13
- 5.5.14
- 5.5.15
- 5.5.16
- 5.5.17
- 5.5.18
- 5.5.19
- 5.5.20
- 5.5.21
- 5.5.22
- 5.5.23
- 5.5.24
- 5.5.25
- 5.6.0
- 5.6.1
- 5.6.2
- 5.6.3
- 5.6.4
- 5.6.5
- 5.6.6
- 5.6.7
- 5.6.8
- 5.6.9
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.00% (0.05999) | 93.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.00% (0.05999) | 92.36th | v5 (v2026.06.15) |
| Dec 28, 2025 | 5.95% (0.05952) | 90.34th | v4 (v2025.03.14) |
| Dec 27, 2025 | 7.60% (0.07598) | 91.57th | v4 (v2025.03.14) |
| Nov 1, 2025 | 5.75% (0.05755) | 90.10th | v4 (v2025.03.14) |
| Oct 28, 2025 | 8.05% (0.08047) | 91.72th | v4 (v2025.03.14) |
| Oct 27, 2025 | 6.54% (0.06541) | 90.73th | v4 (v2025.03.14) |
| Oct 1, 2025 | 8.05% (0.08047) | 91.82th | v4 (v2025.03.14) |
| Jul 30, 2025 | 6.54% (0.06541) | 90.74th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.03% (0.08026) | 91.30th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.89% (0.11894) | 89.54th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.19% (0.07190) | 90.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.26% (0.04259) | 92.59th | v3 (v2023.03.01) |
| Oct 27, 2023 | 4.26% (0.04259) | 91.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.69% (0.04689) | 91.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d2ac264ffea5ca2e85640b6736e0c7cd4ee9a4a9 x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2015/06/18/6 mailing-listx_refsource_MLIST
- http://php.net/ChangeLog-5.php x_refsource_CONFIRM
- http://www.securityfocus.com/bid/75290 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032709 vdb-entryx_refsource_SECTRACK
- https://bugs.php.net/bug.php?id=69646 x_refsource_CONFIRMExploit
- https://security.gentoo.org/glsa/201606-10 vendor-advisoryx_refsource_GENTOO
| Link | Providers | Tags |
|---|---|---|
| http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d2ac264ffea5ca2e85640b6736e0c7cd4ee9a4a9 | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2015/06/18/6 | mailing-listx_refsource_MLIST | |
| http://php.net/ChangeLog-5.php | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/75290 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1032709 | vdb-entryx_refsource_SECTRACK | |
| https://bugs.php.net/bug.php?id=69646 | x_refsource_CONFIRMExploit | |
| https://security.gentoo.org/glsa/201606-10 | vendor-advisoryx_refsource_GENTOO |
Change history (0)
No recorded changes yet.