A previously installed malicious Android application with same signature-level permissions as Firefox can intercept AuthTokens meant for Firefox only. Note: This issue only affects Firefox for Android. Other versions and operating systems are unaffected. This vulnerability affects Firefox < 50.
CVE-2016-5299
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 73.6%
- KEV
- Not listed
Published
June 11, 2018
Last Modified
November 21, 2024
References (8)
- security@mozillahttp://www.securityfocus.com/bid/94337
- security@mozillahttp://www.securitytracker.com/id/1037298
- security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1245791
- security@mozillahttps://www.mozilla.org/security/advisories/mfsa2016-89/
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/94337
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037298
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1245791
- af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2016-89/
Frequently asked(5)
What is CVE-2016-5299?
CVE-2016-5299 is a high vulnerability published on June 11, 2018. A previously installed malicious Android application with same signature-level permissions as Firefox can intercept AuthTokens meant for Firefox only. Note: This issue only affects Firefox for Android. Other versions and operating systems are unaffected. This vulnerability affects Firefox < 50.
When was CVE-2016-5299 disclosed?
CVE-2016-5299 was first published in the National Vulnerability Database on June 11, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-5299 actively exploited?
CVE-2016-5299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-5299?
CVE-2016-5299 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2016-5299?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-5299, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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