CVE-2019-11756
HIGHCVSS 8.8/10EPSS 1.50%
Last modified
CVE-2019-11756 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.. EPSS estimates a 1.50% chance of exploitation in the next 30 days.
Description
Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 71.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1508776Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2019-36/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1508776Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2019-36/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-11756?
Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.
How severe is CVE-2019-11756?
CVE-2019-11756 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11756?
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.
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Are you affected by CVE-2019-11756?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST