VULNERABILITY INTELLIGENCE
CVE-2026-63033
CVSS score6.5 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2026-07-30
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Description
A crafted IEC 60870-5-104 I-frame with a declared object count exceeding what fits in the ASDU body causes InformationObject_ParseObjectAddress to read one byte past the end of the heap-allocated message buffer.
Weakness classification
- ics-cert@hq.dhs.gov: CWE-125