Vulnerability · Published Jul 13, 2023 · Assigned by Honeywell

CVE-2023-25770Controller stack overflow on decoding messages from the server

Critical 9.8

In plain English

A critical-severity unsafe deserialization in C300 from Honeywell. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.7%top 46.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Controller DoS may occur due to buffer overflow when an error is generated in response to a specially crafted message. See Honeywell Security Notification for recommendations on upgrading and versioning.

Affected products (as reported)

Vendor	Product	Versions
Honeywell	C300	501.1 – through 501.6HF8510.1 – through 510.2HF12511.1 – through 511.5TCU3520.1 – through 520.1TCU4520.2 – through 520.2TCU2
Honeywell	C300	510.1 – through 511.5TCU3520.1 – through 520.1TCU4520.2 – through 520.2TCU2

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://process.honeywell.com