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CVE-2021-33652

24
FAUCET Score

CVE-2021-33652 is a high-severity division-by-zero vulnerability affecting Huawei MindSpore, specifically occurring when the Reduce operator encounters a zero value in the axis_sizes parameter. This flaw allows an unauthenticated attacker to cause a denial-of-service (DoS) condition with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, its high CVSS score of 7.5 indicates a significant potential impact on system availability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.0, < 1.3.0CPE matchmatch criteria
cpe:2.3:a:mindspore:mindspore:*:*:*:*:*:openeuler:*:*
0.7.0CPE matchmatch criteria
cpe:2.3:a:mindspore:mindspore:0.7.0:beta:*:*:*:openeuler:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 29th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 / mindspore/community/blob/master/security/security_advisory_list/mssa-2021-003_en.md
PatchThird Party Advisory