CVE-2012-1251
UnknownEPSS 0.60%
Last modified
CVE-2012-1251 is a vulnerability of currently unknown severity. Opera before 9.63 does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.. EPSS estimates a 0.60% chance of exploitation in the next 30 days.
Description
Opera before 9.63 does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Opera | Opera Browser | <= 9.62 |
| Opera | Opera Browser | 1.00 |
| Opera | Opera Browser | 2.00 |
| Opera | Opera Browser | 2.10 |
| Opera | Opera Browser | 2.12 |
| Opera | Opera Browser | 3.00 |
| Opera | Opera Browser | 3.10 |
| Opera | Opera Browser | 3.21 |
| Opera | Opera Browser | 3.50 |
| Opera | Opera Browser | 3.51 |
| Opera | Opera Browser | 3.60 |
| Opera | Opera Browser | 3.61 |
| Opera | Opera Browser | 3.62 |
| Opera | Opera Browser | 4.00 |
| Opera | Opera Browser | 4.01 |
| Opera | Opera Browser | 4.02 |
| Opera | Opera Browser | 5.0 |
| Opera | Opera Browser | 5.02 |
| Opera | Opera Browser | 5.10 |
| Opera | Opera Browser | 5.11 |
| Opera | Opera Browser | 5.12 |
| Opera | Opera Browser | 6.0 |
| Opera | Opera Browser | 6.1 |
| Opera | Opera Browser | 6.01 |
| Opera | Opera Browser | 6.02 |
| Opera | Opera Browser | 6.03 |
| Opera | Opera Browser | 6.04 |
| Opera | Opera Browser | 6.05 |
| Opera | Opera Browser | 6.06 |
| Opera | Opera Browser | 6.11 |
| Opera | Opera Browser | 6.12 |
| Opera | Opera Browser | 7.0 |
| Opera | Opera Browser | 7.01 |
| Opera | Opera Browser | 7.02 |
| Opera | Opera Browser | 7.03 |
| Opera | Opera Browser | 7.10 |
| Opera | Opera Browser | 7.11 |
| Opera | Opera Browser | 7.20 |
| Opera | Opera Browser | 7.21 |
| Opera | Opera Browser | 7.22 |
| Opera | Opera Browser | 7.23 |
| Opera | Opera Browser | 7.50 |
| Opera | Opera Browser | 7.51 |
| Opera | Opera Browser | 7.52 |
| Opera | Opera Browser | 7.53 |
| Opera | Opera Browser | 7.54 |
| Opera | Opera Browser | 7.60 |
| Opera | Opera Browser | 8.0 |
| Opera | Opera Browser | 8.01 |
| Opera | Opera Browser | 8.02 |
Showing 50 of 73 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2012-1251?
Opera before 9.63 does not properly verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
How severe is CVE-2012-1251?
Severity scoring for CVE-2012-1251 is pending analysis. The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.
How do I fix CVE-2012-1251?
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2012-1251?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
