CVE-2024-39808

Severity: medium (CVSS 4.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-11 · updated 2026-06-17
Weakness: CWE-131

Description

Incorrect Calculation of Buffer Size (CWE-131) in the Controller 6000 and Controller 7000 OSDP message handling, allows an attacker with physical access to Controller wiring to instigate a reboot leading to a denial of service. This issue affects: Controller 6000 and Controller 7000 9.10 prior to vCR9.10.240816a (distributed in 9.10.1530 (MR2)), 9.00 prior to vCR9.00.240816a (distributed in 9.00.2168 (MR4)), 8.90 prior to vCR8.90.240816a (distributed in 8.90.2155 (MR5)), 8.80 prior to vCR8.80.240816b (distributed in 8.80.1938 (MR6)), all versions of 8.70 and prior.

Affected products

Gallagher Controller 6000 and Controller 7000: through 8.70; from 9.10 before vCR9.10.240816a; from 9.00 before vCR9.00.240816a; from 8.90 before vCR8.90.240816a; from 8.80 before vCR8.80.240816b — fixed in vCR8.80.240816b, vCR8.90.240816a, vCR9.00.240816a, vCR9.10.240816a

How to fix

Upgrade to a fixed version: Gallagher Controller 6000 and Controller 7000 vCR8.80.240816b, vCR8.90.240816a, vCR9.00.240816a, vCR9.10.240816a. Check the vendor advisory for mitigations.

References

https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2024-39808

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