CVE-2026-8987 PUBLISHED

Authenticated Heap Overflow

Assigner: CyberDanube
Reserved: 19.05.2026 Published: 21.07.2026 Updated: 21.07.2026

Autel Maxi Charger Single firmware through V1.03.51 contains a heap-based buffer overflow in the set_ap_param command handled by the /localcfg endpoint. An authenticated attacker can supply oversized input, resulting in denial of service and potentially arbitrary code execution.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 9.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Autel
Product	MaxiCharger Single
Versions	Default: unaffected affected from 0 to V1.03.51 (incl.)

Credits

S. Eisenreich-Dietz (CyberDanube) finder
T. Weber (CyberDanube) finder
D. Blagojevic (CyberDanube) finder
F. Koroknai (CyberDanube) finder

References

https://cyberdanube.com/security-research/multiple-vulnerabilities-in-autel-maxi-charger/

Problem Types

CWE-122 Heap-based buffer overflow CWE

Impacts

CAPEC-100 Overflow Buffers