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CVE-2021-37665

25
FAUCET Score

CVE-2021-37665 is a high-severity vulnerability affecting TensorFlow versions prior to 2.6.0, 2.5.1, 2.4.3, and 2.3.4. It stems from incomplete input validation in the MKL requantization implementation, allowing an authenticated local attacker to trigger undefined behavior, including null pointer dereferences or out-of-bounds memory access. This can lead to high impact on confidentiality, integrity, and availability. While no active exploitation or public exploit code has been observed, and community discussion is minimal, the vulnerability has been patched in newer TensorFlow versions.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.3.0, < 2.3.4CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
>= 2.4.0, < 2.4.3CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
2.5.0CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:2.5.0:*:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.18%
Probability of exploitation in next 30 days
EPSS Percentile
8.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 32nd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.3.4
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.4.3
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.5.1
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.3.4
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.4.3
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.5.1
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.3.4
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.4.3
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.5.1

Vendor Advisories (1)

pipGHSA-v82p-hv3v-p6qphigh

Incomplete validation in MKL requantization

Aug 25, 2021

References

github.com / tensorflow/tensorflow/commit/203214568f5bc237603dbab6e1fd389f1572f5c9
PatchThird Party Advisory
github.com / tensorflow/tensorflow/commit/9e62869465573cb2d9b5053f1fa02a81fce21d69
PatchThird Party Advisory
github.com / tensorflow/tensorflow/security/advisories/GHSA-v82p-hv3v-p6qp
Third Party Advisory