4.3

CVE-2021-21186: debian debian_linux Incorrect Authorization

CVSS: 4.3v3.1MediumModified
AliasesUBUNTU-CVE-2021-21186DEBIAN-CVE-2021-21186
Published 09-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21186 is a medium (CVSS 4.3) Incorrect Authorization vulnerability in debian debian_linux. EPSS estimates a 1.13% chance of exploitation in the next 30 days, higher than 65.8% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.13%
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 4
DSA-4886-1MGASA-2021-0142OPENSUSE-SU-2021:0392-1OPENSUSE-SU-2021:0401-1OPENSUSE-SU-2024:10681-1OPENSUSE-SU-2024:12948-1

Timeline

  1. 09-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Insufficient policy enforcement in QR scanning in Google Chrome on iOS prior to 89.0.4389.72 allowed an attacker who convinced the user to scan a QR code to bypass navigation restrictions via a crafted QR code.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.13%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.13%

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

Debian2 products
Fedoraproject1 product
Google1 product
  • chrome≥ unspecified, < 89.0.4389.72 | < 89.0.4389.72
Ubuntu1 product
  • chromium-browser< 89.0.4389.82-0ubuntu0.16.04.1 | < 89.0.4389.82-0ubuntu0.18.04.1

4 vendors · 5 products

References

10 links