CVE-2023-6259: Insufficiently Protected Credentials, : Improper Access Control vulnerability in Brivo ACS100, ACS300 allows P

Q: How do I fix CVE-2023-6259?

acs100 firmware: upgrade to 6.2.4.3; acs300 firmware: upgrade to 6.2.4.3. Exact commands for each OS are on this page.

Q: Is CVE-2023-6259 being exploited?

CVE-2023-6259 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-6259 affect?

CVE-2023-6259 affects acs100 firmware, acs300 firmware. Severity is high (CVSS 7.1). Insufficiently Protected Credentials, : Improper Access Control vulnerability in Brivo ACS100, ACS300 allows Password Recovery Exploitation, Bypassing Physical Security.This issue affects ACS100, ACS300: from 5.2.4 before 6.2.4.3.

Routine

HIGH 7.1UPGRADEUPGRADE

CVE-2023-6259 is a high-severity flaw (CVSS 7.1) affecting acs100 firmware, acs300 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insufficiently Protected Credentials, : Improper Access Control vulnerability in Brivo ACS100, ACS300 allows Password Recovery Exploitation, Bypassing Physical Security.This issue affects ACS100, ACS300: from 5.2.4 before 6.2.4.3.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Physical
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-284, CWE-522
Published	2024-02-19
Last modified	2026-06-17

Publisher (CNA): Security Risk Advisors · Vendor: brivo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-02-19 22:15 UTCPublished CVE record published
2026-06-17 06:50 UTCUpdated Record last modified

brivo acs100 firmware UPGRADE

Affected: >= 5.2.4 and < 6.2.4.3

Fixed in: 6.2.4.3

Safe to downgrade to: a release before 5.2.4

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

brivo acs300 firmware UPGRADE

Affected: >= 5.2.4 and < 6.2.4.3

Fixed in: 6.2.4.3

Safe to downgrade to: a release before 5.2.4

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-6259?

acs100 firmware: upgrade to 6.2.4.3; acs300 firmware: upgrade to 6.2.4.3. Exact commands for each OS are on this page.

Is CVE-2023-6259 being exploited?

CVE-2023-6259 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-6259 affect?

CVE-2023-6259 affects acs100 firmware, acs300 firmware. Severity is high (CVSS 7.1). Insufficiently Protected Credentials, : Improper Access Control vulnerability in Brivo ACS100, ACS300 allows Password Recovery Exploitation, Bypassing Physical Security.This issue affects ACS100, ACS300: from 5.2.4 before 6.2.4.3.

How urgent is CVE-2023-6259?

Priority 28/100. High severity

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References

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