7.5

CVE-2021-33639: openatom openeuler_kernel Exposed Dangerous Method or Function

Modified
Published 08-03-2023Last modified 04-03-2025

Vulnerability summary

CVE-2021-33639 is a high (CVSS 7.5) Exposed Dangerous Method or Function vulnerability in openatom openeuler_kernel. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.8% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.49%
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

Timeline

  1. 08-03-2023
    PublishedVulnerability first disclosed.
  2. 04-03-2025
    Last modifiedVulnerability information updated.

Description

REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.49% 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

Affected systems

Version check

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

Openatom1 product

1 vendor · 1 product

References

1 links