Weak proxy objects have weak references on multiple threads when they should only have them on one, resulting in incorrect memory usage and corruption, which leads to potentially exploitable crashes. Note: This issue only affects Firefox for Android. Other operating systems are not affected. This vulnerability affects Firefox < 51.
CVE-2017-5392
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 75.8%
- KEV
- Not listed
Published
June 11, 2018
Last Modified
November 21, 2024
Advisory Details (4)
Auto-updated May 28, 2026Security vulnerabilities fixed in Firefox 51 — Mozilla
https://www.mozilla.org/security/advisories/mfsa2017-01/1293709 - (CVE-2017-5392) nsWindow::LayerViewSupport's weak reference used on multiple threads
https://bugzilla.mozilla.org/show_bug.cgi?id=1293709Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Related CVEs(same CWE)
Same CWE
10 shownCWE-119
Frequently asked(5)
What is CVE-2017-5392?
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What is the CVSS score of CVE-2017-5392?
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Dependency Blast Radius
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