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CVE-2021-33637

20
FAUCET Score

CVE-2021-33637 describes a container escape vulnerability in openeuler iSula, where an attacker controlling a container can escape to the host system when the 'isula export' command is used. This medium-severity vulnerability (CVSS 6.5) has a local attack vector with low complexity, requiring low privileges, and can lead to high integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.8-20210518.144540CPE matchmatch criteria
cpe:2.3:a:openeuler:isula:2.0.8-20210518.144540:*:*:*:*:*:*:*
2.0.18-10CPE matchmatch criteria
cpe:2.3:a:openeuler:isula:2.0.18-10:*:*:*:*:*:*:*
2.1.2CPE matchmatch criteria
cpe:2.3:a:openeuler:isula:2.1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
10.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 50th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gitee.com / src-openeuler/iSulad/pulls/600/files
Patch
gitee.com / src-openeuler/iSulad/pulls/627/files
Patch
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory