CVE-2021-33635: Pull malicious images may cause process to be hijacked
Vulnerability summary
CVE-2021-33635 is a critical (CVSS 9.8) Improper Initialization vulnerability in openeuler isula. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 46.5% of scored vulnerabilities.
Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Timeline
- 29-10-2023PublishedVulnerability first disclosed.
- 09-09-2024Last modifiedVulnerability information updated.
Description
When malicious images are pulled by isula pull, attackers can execute arbitrary code.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.55% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-665Improper InitializationThe product does not initialize or incorrectly initializes a resource.
- CWE-94Improper Control of Generation of CodeThe product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
1 vendor · 2 products