9.3

CVE-2020-26952: mozilla firefox Out-of-bounds Write

CVSS: 9.3v2.0HighModified
AliasesUBUNTU-CVE-2020-26952
Published 09-12-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-26952 is a high (CVSS 9.3) Out-of-bounds Write vulnerability in mozilla firefox. EPSS estimates a 1.16% chance of exploitation in the next 30 days, higher than 66.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
1.16%
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 4 · Related 4
OPENSUSE-SU-2024:10600-1OPENSUSE-SU-2024:14572-1USN-4637-1USN-4637-2

Timeline

  1. 09-12-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption and a potentially exploitable crash when handling out-of-memory errors. This vulnerability affects Firefox < 83.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.16%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

0.00 pp

From 1.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.16%

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

Ubuntu4 products
  • firefox< 83.0+build2-0ubuntu0.16.04.3 | < 83.0+build2-0ubuntu0.18.04.2 | < 83.0+build2-0ubuntu0.20.04.1
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Mozilla1 product

2 vendors · 5 products

References

7 links