CVE-2021-29993
HIGHCVSS 8.1/10EPSS 0.70%
Last modified
CVE-2021-29993 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. EPSS estimates a 0.70% chance of exploitation in the next 30 days.
Description
Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 92.0 |
References
- https://www.mozilla.org/security/advisories/mfsa2021-38/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-38/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-29993?
Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92.
How severe is CVE-2021-29993?
CVE-2021-29993 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29993?
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-2021-29993?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST