How severe is CVE-2023-6355?

CVE-2023-6355 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-6355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6355?

CVE-2023-6355 affects Gallagher Controller 7000 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6355?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-6355 published?

CVE-2023-6355 was published on 2023-12-18 and last updated on 2026-06-17.

CVE-2023-6355

CVE-2023-6355 is a medium-severity vulnerability in Gallagher Controller 7000 Firmware with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Gallagher Controller 7000 Firmware
Published: 2023-12-18
Last modified: 2026-06-17

Description

Incorrect selection of fuse values in the Controller 7000 platform allows an attacker to bypass some protection mechanisms to enable local debug. This issue affects: Gallagher Controller 7000 9.00 prior to vCR9.00.231204b (distributed in 9.00.1507 (MR1)), 8.90 prior to vCR8.90.231204a (distributed in 8.90.1620 (MR2)), 8.80 prior to vCR8.80.231204a (distributed in 8.80.1369 (MR3)), 8.70 prior to vCR8.70.231204a (distributed in 8.70.2375 (MR5)).

Frequently asked questions

What is CVE-2023-6355?: Incorrect selection of fuse values in the Controller 7000 platform allows an attacker to bypass some protection mechanisms to enable local debug. This issue affects: Gallagher Controller 7000 9.00 prior to vCR9.00.231204b (distributed in 9.00.1507 (MR1)), 8.90 prior to vCR8.90.231204a (distributed in 8.90.1620 (MR2)), 8.80 prior to vCR8.80.231204a (distributed in 8.80.1369 (MR3)), 8.70 prior to vCR8.70.231204a (distributed in 8.70.2375 (MR5)).
How severe is CVE-2023-6355?: CVE-2023-6355 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-6355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6355?: CVE-2023-6355 affects Gallagher Controller 7000 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-6355 published?: CVE-2023-6355 was published on 2023-12-18 and last updated on 2026-06-17.

References

https://security.gallagher.com/Security-Advisories/CVE-2023-6355

Affected products (1)

cpe:2.3:o:gallagher:controller_7000_firmware:*:*:*:*:*:*:*:*

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