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CVE-2021-37663

24
FAUCET Score

CVE-2021-37663 is a high-severity vulnerability in TensorFlow, affecting versions prior to 2.6.0, 2.5.1, 2.4.3, and 2.3.4. It stems from incomplete validation in tf.raw_ops.QuantizeV2, allowing an authenticated local attacker to trigger undefined behavior, including null pointer dereferences or out-of-bounds heap access. With a CVSS score of 7.8, this flaw can lead to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

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
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
7.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0017 is in the 29th 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: 2.4.3
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: tensorflowFixed in: 2.3.4
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
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.5.1

Vendor Advisories (1)

pipGHSA-g25h-jr74-qp5jhigh

Incomplete validation in `QuantizeV2`

Aug 25, 2021

References

github.com / tensorflow/tensorflow/commit/6da6620efad397c85493b8f8667b821403516708
PatchThird Party Advisory
github.com / tensorflow/tensorflow/security/advisories/GHSA-g25h-jr74-qp5j
Third Party Advisory