CVE-2026-42627
MEDIUM EPSS 3.1%
Published May 22, 20261mo ago · Modified Jun 17, 20261w ago
6.2 CVSS 3.1
Published May 22, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
Description
In Arm ArmNN through 2026-03-27, an integer overflow in TensorShape::GetNumElements() in armnn/Tensor.cpp allows a crafted TFLite model file to bypass buffer size validation and trigger a heap-based buffer over-read during model optimization. The overflow occurs when multiplying tensor dimensions using 32-bit unsigned arithmetic without overflow detection, causing GetNumBytes() to return an understated allocation size. During Optimize()->InferOutputShapes(), the BatchToSpaceNdLayer reads beyond the allocated buffer.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
3.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-190 Integer Overflow or Wraparound Numeric Error
References 2
- github.com https://github.com/ARM-software/armnn/blob/main/src/armnn/Tensor.cpp
- github.com https://github.com/ARM-software/armnn/blob/main/src/armnnTfLiteParser/TfLiteParser.cpp
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.