9.8

CVE-2023-5175: mozilla firefox Use After Free

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2023-5175CGA-45m7-87g4-5v3mCGA-hc38-8623-v84q
Published 27-09-2023Last modified 01-05-2025
Open JSON

Vulnerability summary

CVE-2023-5175 is a critical (CVSS 9.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 63.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
1.04%
0%100%
Low · +0.20 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2024:13272-1OPENSUSE-SU-2024:14572-1USN-6404-1CGA-96CG-FMWG-F27P

Timeline

  1. 27-09-2023
    PublishedVulnerability first disclosed.
  2. 01-05-2025
    Last modifiedVulnerability information updated.

Description

During process shutdown, it was possible that an `ImageBitmap` was created that would later be used after being freed from a different codepath, leading to a potentially exploitable crash. This vulnerability affects Firefox < 118.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

+0.20 pp

From 0.84% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.04%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu7 products
  • firefox< 118.0.1+build1-0ubuntu0.20.04.1
  • mozjs102All versions (No fix recorded)
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Chainguard1 product
  • firefox-esr< 118-r0
Mozilla1 product
  • firefox≥ unspecified, < 118 | < 118

3 vendors · 9 products

References

7 links