CVE-2026-42485Network attack vector

Remote code execution via unchecked diagnostic payload copy

Published May 1, 2026 · Updated May 1, 2026

Stack-based buffer overflow in AGL agl-service-can-low-level 17.1.12 and earlier allows remote attackers to execute code via UDS requests. The send_diagnostic_request function in uds.c copies a caller-controlled payload into a six-byte stack buffer at a one-plus-PID offset without checking the remaining capacity. Exploitation requires network reachability to the library and a 32-bit ARM automotive ECU without stack canaries, where the overwrite can replace the return address.

CVSS severity7.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in AGL agl-service-can-low-level 17.1.12 and earlier allows remote attackers to execute code via UDS requests. The send_diagnostic_request function in uds.c copies a caller-controlled payload into a six-byte stack buffer at a one-plus-PID offset without checking the remaining capacity. Exploitation requires network reachability to the library and a 32-bit ARM automotive ECU without stack canaries, where the overwrite can replace the return address.

The record

CVE
CVE-2026-42485
Published
May 1, 2026
Updated
May 1, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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