6.5

CVE-2020-12407: mozilla firefox Out-of-bounds Read

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-12407
Published 09-07-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-12407 is a medium (CVSS 6.5) Out-of-bounds Read vulnerability in mozilla firefox. EPSS estimates a 0.97% chance of exploitation in the next 30 days, higher than 61.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.97%
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 3 · Related 3
OPENSUSE-SU-2024:10600-1OPENSUSE-SU-2024:14572-1USN-4383-1

Timeline

  1. 09-07-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Mozilla Developer Nicolas Silva found that when using WebRender, Firefox would under certain conditions leak arbitrary GPU memory to the visible screen. The leaked memory content was visible to the user, but not observable from web content. This vulnerability affects Firefox < 77.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.97%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.97% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.97%

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< 77.0.1+build1-0ubuntu0.16.04.1 | < 77.0.1+build1-0ubuntu0.18.04.1 | < 77.0.1+build1-0ubuntu0.20.04.1
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Mozilla1 product
  • firefox≥ unspecified, < 77 | < 77.0

2 vendors · 5 products

References

6 links