CVE-2026-73523

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Source
https://cve.org/CVERecord?id=CVE-2026-73523
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73523.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73523
Published
2026-08-17T18:00:01Z
Modified
2026-08-19T03:48:32Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
COVESA Open1722 0.9.2 Stack Memory Disclosure via acf-can-listener.c Integer Truncation
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-197"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73523.json"
}
References

Affected packages

Git / github.com/covesa/open1722

Affected ranges

Type
GIT
Repo
https://github.com/covesa/open1722
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
473309bda59fc27dcafeb5b817c385cd1e1bc985
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.9.2"
        },
        {
            "introduced": "Open1722"
        },
        {
            "fixed": "0.9.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v0.*
v0.8.0
v0.9.0
v0.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73523.json"