6.5

CVE-2021-21210: debian debian_linux

Modified
AliasesUBUNTU-CVE-2021-21210DEBIAN-CVE-2021-21210ALPINE-CVE-2021-21210
Published 26-04-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-21210 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 1.91% chance of exploitation in the next 30 days, higher than 79.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.91%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 3

Timeline

  1. 26-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Inappropriate implementation in Network in Google Chrome prior to 90.0.4430.72 allowed a remote attacker to potentially access local UDP ports via a crafted HTML page.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.91%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.91% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
Alpine1 product
  • chromium< 90.0.4430.72-r0
Fedoraproject1 product
Google1 product
  • chrome≥ unspecified, < 90.0.4430.72 | < 90.0.4430.72
Ubuntu1 product
  • chromium-browser< 90.0.4430.72-0ubuntu0.16.04.1 | < 90.0.4430.72-0ubuntu0.18.04.1

5 vendors · 6 products

References

11 links
Show all 11 references