CVE-2026-73523 (GCVE-0-2026-73523)

Vulnerability from cvelistv5 – Published: 2026-08-17 18:00 – Updated: 2026-08-17 18:12 X_Open Source
VLAI
Title
COVESA Open1722 0.9.2 Stack Memory Disclosure via acf-can-listener.c Integer Truncation
Summary
COVESA Open1722 through 0.9.2 contains an integer truncation vulnerability in acf-can-listener.c that allows unauthenticated remote attackers to cause the CAN listener to transmit process stack memory onto the CAN bus by sending a rejected UDP datagram with a matching AVTP stream ID. The num_can_msgs variable declared as uint8_t truncates the -1 error return value from avtp_to_can() to 255, causing a write loop to iterate 255 times over a 15-slot stack array and leak approximately 18 KB of adjacent stack memory as roughly 240 CAN frames to any recipient on the CAN bus.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 18:12 UTC
CWE
  • CWE-197 - Numeric Truncation Error
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6657 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
COVESA Open1722 Affected: 0 , ≤ 0.9.2 (semver)
guessed Create a notification for this product.
Date Public
2026-08-13 00:00
Credits
Fatullayev Asadbek
Show details on NVD website
To clipboard 

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