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CVE-2021-37644

19
FAUCET Score

CVE-2021-37644 is a medium-severity vulnerability in TensorFlow that allows a local attacker to cause a denial of service. By providing a negative value to the 'num_elements' argument in 'tf.raw_ops.TensorListReserve', an attacker can trigger a runtime abort due to an invalid reallocation of a 'std::vector'. This vulnerability has a CVSS score of 5.5 and is categorized as CWE-617 (Uncontrolled Recursion). While there is no evidence of active exploitation, exploit code, or significant community discussion, patches are available in TensorFlow 2.6.0, 2.5.1, 2.4.3, and 2.3.4.

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

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 30th percentile among its peer group of 15,940 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

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-27j5-4p9v-pp67medium

`std::abort` raised from `TensorListReserve`

Aug 25, 2021

References

github.com / tensorflow/tensorflow/commit/8a6e874437670045e6c7dc6154c7412b4a2135e2
PatchThird Party Advisory
github.com / tensorflow/tensorflow/security/advisories/GHSA-27j5-4p9v-pp67
Third Party Advisory