MEDIUM
The substr_compare function in string.c in PHP 5.1.2 allows context-dependent attackers to cause a denial of service (memory access violation) via an out-of-bounds offset argument
Published Apr 24, 2006
6.4
MEDIUMCVSS 2.0
EPSS 2.19%
Description
The substr_compare function in string.c in PHP 5.1.2 allows context-dependent attackers to cause a denial of service (memory access violation) via an out-of-bounds offset argument.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
6.4 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.19% 0.02186
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.02186
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.19% (0.02186) | 81.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.19% (0.02186) | 79.99th | v5 (v2026.06.15) |
| Mar 17, 2025 | 3.93% (0.03931) | 87.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.49% (0.03488) | 91.89th | v3 (v2023.03.01) |
| Dec 29, 2023 | 3.49% (0.03488) | 90.57th | v3 (v2023.03.01) |
| Nov 4, 2023 | 2.57% (0.02570) | 89.09th | v3 (v2023.03.01) |
| Sep 17, 2023 | 3.07% (0.03070) | 89.82th | v3 (v2023.03.01) |
| Jul 29, 2023 | 2.19% (0.02189) | 87.93th | v3 (v2023.03.01) |
| Apr 5, 2023 | 2.49% (0.02491) | 88.46th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.51% (0.01508) | 84.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
Weaknesses (1)
References (12)
- http://secunia.com/advisories/20052 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/20269 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/20676 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/21125 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://security.gentoo.org/glsa/glsa-200605-08.xml vendor-advisoryx_refsource_GENTOO
- http://securitytracker.com/id?1015979 vdb-entryx_refsource_SECTRACK
- http://www.infigo.hr/en/in_focus/advisories/INFIGO-2006-04-02 x_refsource_MISCExploit
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:091 vendor-advisoryx_refsource_MANDRAKE
- http://www.novell.com/linux/security/advisories/2006_31_php.html vendor-advisoryx_refsource_SUSE
- http://www.ubuntu.com/usn/usn-320-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2006/1500 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/26003 vdb-entryx_refsource_XF
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Apr 24, 2006
Updated Aug 7, 2024
Reserved Apr 24, 2006
Link CVE-2006-1991
CISA Vulnrichment
Updated n/a