CVE-2025-1930: mozilla firefox Use After Free
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2025-1930CGA-w5rw-wjc4-vqj3CGA-w9xq-r4g9-47m7CGA-j6v8-hx62-74xcCGA-vgj7-wh94-xph4
Published 04-03-2025Last modified 04-06-2026
Vulnerability summary
CVE-2025-1930 is a high (CVSS 8.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.9% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.40%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 17 · Related 8Timeline
- 04-03-2025PublishedVulnerability first disclosed.
- 04-06-2026Last modifiedVulnerability information updated.
Description
On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-after-free in the Browser process. This could have led to a sandbox escape. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
+0.01 pp
From 0.39% on 20-09-2026
20-09-202620-10-2026
EPSS score0.40%
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)
Chainguard2 products
- firefox< 136-r0
- firefox-esr< 136-r0
Mozilla2 products
- firefox< 115.21.0 | < 136.0 | ≥ 116.0, < 128.8.0
- thunderbird< 128.8 | > 1.28.8, < 136.0
Wolfi1 product
- firefox< 136-r0
4 vendors · 13 products