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CVE-2020-28975

21
FAUCET Score

CVE-2020-28975 describes a denial-of-service vulnerability in Libsvm v324, affecting products like scikit-learn 0.23.2. An attacker can trigger a segmentation fault by providing a crafted SVM model with an oversized _n_support array, though the scikit-learn vendor notes this requires violating API usage. With a CVSS score of 7.5 (High), this vulnerability is remotely exploitable with low complexity, leading to high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.23.2, < 1.0.1CPE matchmatch criteria
cpe:2.3:a:scikit-learn:scikit-learn:*:*:*:*:*:*:*:*

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
3.43%
Probability of exploitation in next 30 days
EPSS Percentile
87.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0343 is in the 78th percentile among its peer group of 51,506 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: scikit-learnFixed in: 1.0.1

Vendor Advisories (1)

pipGHSA-jxfp-4rvq-9h9mhigh

scikit-learn Denial of Service

May 24, 2022

References

packetstormsecurity.com / files/160281/SciKit-Learn-0.23.2-Denial-Of-Service.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2020/Nov/44
Mailing ListThird Party Advisory
github.com / cjlin1/libsvm/blob/9a3a9708926dec87d382c43b203f2ca19c2d56a0/svm.cpp
ExploitThird Party Advisory
github.com / scikit-learn/scikit-learn/commit/1bf13d567d3cd74854aa8343fd25b61dd768bb85
PatchThird Party Advisory
github.com / scikit-learn/scikit-learn/issues/18891
ExploitIssue TrackingThird Party Advisory
security.gentoo.org / glsa/202301-03
Third Party Advisory