CVE-2017-7770 json
A mechanism where when a new tab is loaded through JavaScript events, if fullscreen mode is then entered, the addressbar will not be render…
published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16745
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
A mechanism where when a new tab is loaded through JavaScript events, if fullscreen mode is then entered, the addressbar will not be rendered. This would allow a malicious site to displayed a spoofed addressbar, showing the location of an arbitrary website instead of the one loaded. Note: this issue only affects Firefox for Android. Desktop Firefox is unaffected. This vulnerability affects Firefox < 54.
Patch / fix
- Mozilla Firefox 54
Exploit prediction
1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Mozilla Firefox
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
bugzilla.mozilla.org
/show_bug.cgi?id=1317242
issue-tracking, vendor-advisory
-
mozilla.org
/security/advisories/mfsa2017-15/
vendor-advisory
-
securitytracker.com
/id/1038689
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/99049
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-7770
- NVD CVE-2017-7770
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.