How severe is CVE-2023-22524?

CVE-2023-22524 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-22524 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22524?

CVE-2023-22524 affects Atlassian Companion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-22524?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-22524 published?

CVE-2023-22524 was published on 2023-12-06 and last updated on 2026-06-17.

CVE-2023-22524

CVE-2023-22524 is a critical-severity vulnerability in Atlassian Companion with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 25% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 25% (98th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atlassian Companion
Published: 2023-12-06
Last modified: 2026-06-17

Description

Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability. An attacker could utilize WebSockets to bypass Atlassian Companion’s blocklist and MacOS Gatekeeper to allow execution of code.

Frequently asked questions

What is CVE-2023-22524?: Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability. An attacker could utilize WebSockets to bypass Atlassian Companion’s blocklist and MacOS Gatekeeper to allow execution of code.
How severe is CVE-2023-22524?: CVE-2023-22524 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-22524 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22524?: CVE-2023-22524 affects Atlassian Companion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-22524?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-22524 published?: CVE-2023-22524 was published on 2023-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:atlassian:companion:*:*:*:*:*:*:*:*

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