Multiple integer overflows in mcrypt.c in the mcrypt extension in PHP before 5.5.37…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
Multiple integer overflows in mcrypt.c in the mcrypt extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 allow remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted length value, related to the (1) mcrypt_generic and (2) mdecrypt_generic functions.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 40
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | up to 5.5.36 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:* | 5.6.0 alpha1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:* | 5.6.0 alpha2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:* | 5.6.0 alpha3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:* | 5.6.0 alpha4 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:* | 5.6.0 alpha5 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:* | 5.6.0 beta1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:* | 5.6.0 beta2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:* | 5.6.0 beta3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:* | 5.6.0 beta4 | Vulnerable | PHP |
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions up to 5.5.36 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:* Versions 5.6.0 alpha1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:* Versions 5.6.0 alpha2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:* Versions 5.6.0 alpha3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:* Versions 5.6.0 alpha4 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:* Versions 5.6.0 alpha5 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:* Versions 5.6.0 beta1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:* Versions 5.6.0 beta2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:* Versions 5.6.0 beta3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:* Versions 5.6.0 beta4 Vulnerable ·PHP
Show 30 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* | 5.6.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* | 5.6.2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* | 5.6.3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* | 5.6.4 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* | 5.6.5 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* | 5.6.6 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* | 5.6.7 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* | 5.6.8 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* | 5.6.9 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* | 5.6.10 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* | 5.6.11 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* | 5.6.12 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* | 5.6.13 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* | 5.6.14 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* | 5.6.15 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* | 5.6.16 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* | 5.6.17 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* | 5.6.18 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* | 5.6.19 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* | 5.6.20 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.21:*:*:*:*:*:*:* | 5.6.21 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.6.22:*:*:*:*:*:*:* | 5.6.22 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* | 7.0.0 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* | 7.0.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* | 7.0.2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* | 7.0.3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* | 7.0.4 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* | 7.0.5 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.6:*:*:*:*:*:*:* | 7.0.6 | Vulnerable | PHP |
| cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:* | 7.0.7 | Vulnerable | PHP |
- cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* Versions 5.6.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* Versions 5.6.2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* Versions 5.6.3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:* Versions 5.6.4 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:* Versions 5.6.5 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:* Versions 5.6.6 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:* Versions 5.6.7 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:* Versions 5.6.8 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:* Versions 5.6.9 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:* Versions 5.6.10 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:* Versions 5.6.11 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:* Versions 5.6.12 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:* Versions 5.6.13 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:* Versions 5.6.14 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:* Versions 5.6.15 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:* Versions 5.6.16 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:* Versions 5.6.17 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:* Versions 5.6.18 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:* Versions 5.6.19 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:* Versions 5.6.20 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.21:*:*:*:*:*:*:* Versions 5.6.21 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.6.22:*:*:*:*:*:*:* Versions 5.6.22 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:* Versions 7.0.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:* Versions 7.0.2 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:* Versions 7.0.3 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:* Versions 7.0.4 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:* Versions 7.0.5 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.6:*:*:*:*:*:*:* Versions 7.0.6 Vulnerable ·PHP
- cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:* Versions 7.0.7 Vulnerable ·PHP
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2016-5769
- 2026-10-03 Alias added: GHSA-5jqx-3p4m-wv4h
References
Advisory 6
More Php vulnerabilities
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- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2012-01607 sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
- TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
- TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
Sources
- CVE-2016-5769 · CVE Program
- CVE-2016-5769 · NVD
- FIRST EPSS
- GHSA-5jqx-3p4m-wv4h · GitHub Advisory Database · CC BY 4.0
- CVE-2016-5769 · Red Hat security data · CC BY 4.0
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