CVE-2026-74951: mozilla firefox_mobile
CVSS: 6.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-74951
Published 18-08-2026Last modified 18-08-2026
Vulnerability summary
CVE-2026-74951 is a medium (CVSS 6.5) vulnerability in mozilla firefox_mobile. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.8% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.27%
0%100%
Low · +0.11 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 18-08-2026PublishedVulnerability first disclosed.
- 18-08-2026Last modifiedVulnerability information updated.
Description
Clickjacking issue in Firefox for Android. This vulnerability was fixed in Firefox 154.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
+0.11 pp
From 0.16% on 21-09-2026
21-09-202621-10-2026
EPSS score0.27%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu8 products
- mozjs102All versions (No fix recorded)
- mozjs115All versions (No fix recorded)
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
Mozilla1 product
- firefox_mobile< 154.0
2 vendors · 9 products
References
5 links- bugzilla.mozilla.org/show_bug.cgi?id=1978587Permissions Required
- www.mozilla.org/security/advisories/mfsa2026-74/Vendor Advisory