CVE-2006-1991
UnknownEPSS 2.19%
Last modified
CVE-2006-1991 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.19% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | 5.1.2 |
References
- http://secunia.com/advisories/20052Vendor Advisory
- http://secunia.com/advisories/20269Patch, Vendor Advisory
- http://secunia.com/advisories/20676Vendor Advisory
- http://secunia.com/advisories/21125Vendor Advisory
- http://www.vupen.com/english/advisories/2006/1500Vendor Advisory
- http://secunia.com/advisories/20052Vendor Advisory
- http://secunia.com/advisories/20269Patch, Vendor Advisory
- http://secunia.com/advisories/20676Vendor Advisory
- http://secunia.com/advisories/21125Vendor Advisory
- http://www.vupen.com/english/advisories/2006/1500Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2006-1991?
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.
How severe is CVE-2006-1991?
Severity scoring for CVE-2006-1991 is pending analysis. The EPSS model estimates a 2.19% probability of exploitation in the next 30 days.
How do I fix CVE-2006-1991?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2006-1991?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST