CVE-2026-80309

Stack-based buffer overflow in XML input parsing in EYE-SV600

CVE CVE-2026-80309
Title Stack-based buffer overflow in XML input parsing in EYE-SV600
Credits
  • Victor Pasman (DIVD) (analyst)
  • Ian van der Wurff (Tozetta) (finder)
Affected products
Product Affected Unaffected Unknown
Sungrow EYE-SV600 (EyeM4 logger) >= 0 to < 002.00.P029B001 (custom)
everything else
CVSS
Base score 6.9 - MEDIUM
Attack Vector NETWORK
Attack Complexity> LOW
Attack Requirements NONE
Privileges Required HIGH
Confidentiality Impact
Vulnerable system NONE Subsequent systems NONE
Integrity Impact
Vulnerable system NONE Subsequent systems NONE
Availability Impact
Vulnerable system HIGH Subsequent systems NONE
Safety impact NOT_DEFINED
Automatable NOT_DEFINED
Recovery NOT_DEFINED
Value Density NOT_DEFINED
Vulnerability Response effort NOT_DEFINED
Provider Urgency NOT_DEFINED
References https://csirt.divd.nl/CVE-2026-80309 ( third-party-advisory )
Problem type(s) CWE-121 Stack-based Buffer Overflow
Impact(s) CAPEC-100 Overflow Buffers
Date published
Last modified

Description

The EYE-SV600 (EyeM4 logger) does not validate the length of a field in attacker-supplied XML input before copying it into a fixed-size buffer, allowing an authenticated attacker to reliably crash the service (denial of service) and, depending on exploitation, potentially gain control of program execution.

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