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CVE-2021-29520

24
FAUCET Score

CVE-2021-29520 is a high-severity vulnerability affecting Google TensorFlow, an open-source machine learning platform. It stems from missing validation in tf.raw_ops.Conv3DBackprop* operations, leading to heap buffer overflows due to incorrect assumptions about tensor shapes. This flaw allows a local attacker to achieve high confidentiality, integrity, and availability impacts. While the vulnerability is severe, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.1.4CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
>= 2.2.0, < 2.2.3CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
>= 2.3.0, < 2.3.3CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*
>= 2.4.0, < 2.4.2CPE matchmatch criteria
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

2.5LOW

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
1.0
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 43rd 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 (13)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.1.4
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.2.3
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.3.3
pippatch availablevia ghsa
Product: tensorflowFixed in: 2.4.2
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.1.4
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.2.3
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.3.3
pippatch availablevia ghsa
Product: tensorflow-cpuFixed in: 2.4.2
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.1.4
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.2.3
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.3.3
pippatch availablevia ghsa
Product: tensorflow-gpuFixed in: 2.4.2

Vendor Advisories (1)

pipGHSA-wcv5-qrj6-9pfmlow

Heap buffer overflow in `Conv3DBackprop*`

May 21, 2021

References

github.com / tensorflow/tensorflow/commit/8f37b52e1320d8d72a9529b2468277791a261197
PatchThird Party Advisory
github.com / tensorflow/tensorflow/security/advisories/GHSA-wcv5-qrj6-9pfm
ExploitPatchThird Party Advisory