TI-2023-04978 Aliases CVE-2023-5407 GHSA-qppc-rv3c-f6g6

Stack-based buffer overflow in Honeywell C300

LOW 27CWE-121Published 2024-04-17 · Updated 2024-08-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Controller denial of service due to improper handling of a specially crafted message received by the controller. See Honeywell Security Notification for recommendations on upgrading and versioning.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00443 38th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Honeywell	C300	520.2 – 520.2 TCU4; 510.1 – 510.2 HF13; 520.1 – 520.1 TCU4; 511.1 – 511.5 TCU4 HF3	—	No fix listed	CNA
Honeywell	C300	520.2 – 520.2 TCU4; 511.1 – 511.5 TCU4 HF3; 520.1 – 520.1 TCU4	—	No fix listed	CNA
Honeywell	C300	520.2 – 520.2 TCU4; 520.1 – 520.1 TCU4; 520.2 TCU4 HFR2 – 511.5 TCU4 HF3	—	No fix listed	CNA

C300 VendorHoneywell Affected 520.2 – 520.2 TCU4; 510.1 – 510.2 HF13; 520.1 – 520.1 TCU4; 511.1 – 511.5 TCU4 HF3 Fixed in — No fix listed CNA
C300 VendorHoneywell Affected 520.2 – 520.2 TCU4; 511.1 – 511.5 TCU4 HF3; 520.1 – 520.1 TCU4 Fixed in — No fix listed CNA
C300 VendorHoneywell Affected 520.2 – 520.2 TCU4; 520.1 – 520.1 TCU4; 520.2 TCU4 HFR2 – 511.5 TCU4 HF3 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:honeywell:c300_firmware::::::::	—	—	Honeywell

cpe:2.3:o:honeywell:c300_firmware:*:*:*:*:*:*:*:* Versions — — ·Honeywell

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-5407
2026-10-03 Alias added: GHSA-qppc-rv3c-f6g6

References

Other 1

https://process.honeywell.com

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TI-2021-22482 WIN-PACK PRO 4.8 - 'WPCommandFileService' Unquoted Service Path CVSS 4.0HIGH 8.5
TI-2021-22480 WIN-PACK PRO 4.8 - 'GuardTourService' Unquoted Service Path CVSS 4.0HIGH 8.5
TI-2007-02844 Buffer overflow in the BaseRunner ActiveX control in the Ademco ATNBaseLoader100 Module… CVSS 2.0HIGH 10.0
TI-2023-18324 MAS (a Carrier brand) MASmobile Classic Authorization Bypass CVSS 3.1MEDIUM 6.5
TI-2023-28253 XML external entity injection in Honeywell Saia PG5 Controls Suite CVSS 3.1MEDIUM 6.5

See all 132 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences