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CVE-2016-5254

UnknownEPSS 2.98%

Last modified

CVE-2016-5254 is a vulnerability of currently unknown severity. Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.. EPSS estimates a 2.98% chance of exploitation in the next 30 days.

Description

Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.

Metrics

EPSS Probability
2.98%

85.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MozillaFirefox<= 47.0.1
MozillaFirefox45.1.0
MozillaFirefox45.1.1
MozillaFirefox45.2.0
MozillaFirefox45.3.0
OracleLinux5.0
OracleLinux6
OracleLinux7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-5254?
Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.
How severe is CVE-2016-5254?
Severity scoring for CVE-2016-5254 is pending analysis. The EPSS model estimates a 2.98% probability of exploitation in the next 30 days.
How do I fix CVE-2016-5254?
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.

Are you affected by CVE-2016-5254?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST