Buffer overflow in Covesa Open1722
CVE-2026-73522
COVESA Open1722 through 0.9.2 contains a stack buffer overflow vulnerability that allows unauthenticated remote attackers to write past the end of a fixed 15-slot stack array by sending a crafted UDP datagram containing more than 15 ACF-CAN messages. The avtp_to_can() function increments its write index without bounding it against the caller-supplied array size, and because the listener accepts datagrams from any sender matching a hardcoded unauthenticated stream ID transmitted in plaintext, attackers can corrupt adjacent stack memory to achieve arbitrary code execution or denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.040 (90.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.040 · change: +0.016
Affected products
- Covesa Open1722 — versions 0
Weakness classification (CWE)
References
- github.com/COVESA/Open1722/issues/154 (issue-tracking)
- www.vulncheck.com/advisories/covesa-open1722-stack-buffer-overflow-via-avtp-to-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73522?
- CVE-2026-73522 is a high-severity vulnerability in Covesa Open1722, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-08-17.
- How severe is CVE-2026-73522?
- High severity. CVSS v3 base score is 7.5 out of 10.