6.5

CVE-2021-21123: google chrome Improper Input Validation

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-21123DEBIAN-CVE-2021-21123
Published 09-02-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21123 is a medium (CVSS 6.5) Improper Input Validation vulnerability in google chrome. EPSS estimates a 10.91% chance of exploitation in the next 30 days, higher than 95.8% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
10.91%
0%100%
Medium · 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 10 · Related 8
DSA-4846-1MGASA-2021-0406OPENSUSE-SU-2021:0166-1OPENSUSE-SU-2021:0173-1OPENSUSE-SU-2021:0177-1OPENSUSE-SU-2021:0186-1

Timeline

  1. 09-02-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Insufficient data validation in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

10.91%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

0.00 pp

From 10.91% on 19-09-2026

19-09-202619-10-2026
EPSS score
10.91%

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

Debian1 product
  • chromium< 88.0.4324.96-0.1
Google1 product
  • chrome≥ unspecified, < 88.0.4324.96 | < 88.0.4324.96
Microsoft1 product
Ubuntu1 product
  • chromium-browser< 89.0.4389.82-0ubuntu0.16.04.1 | < 89.0.4389.82-0ubuntu0.18.04.1

4 vendors · 4 products

References

6 links