6.5

CVE-2023-6211: mozilla firefox

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-6211CGA-3xmx-4mq5-wq8wCGA-v97g-59x2-9v4c
Published 21-11-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-6211 is a medium (CVSS 6.5) vulnerability in mozilla firefox. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.4% 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
0.49%
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 4
OPENSUSE-SU-2024:13468-1OPENSUSE-SU-2024:14572-1USN-6509-1CGA-H7QH-HQ93-95V4

Timeline

  1. 21-11-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. This vulnerability affects Firefox < 120.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

0.00 pp

From 0.49% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.49%

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< 120.0+build2-0ubuntu0.20.04.1
  • mozjs102All versions (No fix recorded)
  • mozjs38All versions (No fix recorded)
  • mozjs52All versions (No fix recorded)
  • mozjs68All versions (No fix recorded)
Chainguard1 product
  • firefox-esr< 120.0-r0
Mozilla1 product
  • firefox≥ unspecified, < 120 | < 120.0

3 vendors · 9 products

References

7 links