8.8

CVE-2023-37209: mozilla firefox Use After Free

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2023-37209
Published 05-07-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-37209 is a high (CVSS 8.8) Use After Free vulnerability in mozilla firefox. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 47.4% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.59%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 6
OPENSUSE-SU-2024:13037-1OPENSUSE-SU-2024:14572-1SUSE-SU-2023:2849-1SUSE-SU-2023:2850-1SUSE-SU-2023:2886-1USN-6201-1

Timeline

  1. 05-07-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

A use-after-free condition existed in `NotifyOnHistoryReload` where a `LoadingSessionHistoryEntry` object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused. This vulnerability affects Firefox < 115.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.59%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

0.00 pp

From 0.59% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.59%

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

Mozilla1 product
  • firefox≥ unspecified, < 115 | < 115.0
Ubuntu1 product
  • firefox< 115.0+build2-0ubuntu0.20.04.3

2 vendors · 2 products

References

7 links