How severe is CVE-2022-27502?

CVE-2022-27502 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-27502 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-27502?

CVE-2022-27502 affects Realvnc Vnc Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-27502?

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

When was CVE-2022-27502 published?

CVE-2022-27502 was published on 2022-06-10 and last updated on 2026-06-17.

CVE-2022-27502

CVE-2022-27502 is a high-severity vulnerability in Realvnc Vnc Server with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Realvnc Vnc Server
Published: 2022-06-10
Last modified: 2026-06-17

Description

RealVNC VNC Server 6.9.0 through 5.1.0 for Windows allows local privilege escalation because an installer repair operation executes %TEMP% files as SYSTEM.

Frequently asked questions

What is CVE-2022-27502?: RealVNC VNC Server 6.9.0 through 5.1.0 for Windows allows local privilege escalation because an installer repair operation executes %TEMP% files as SYSTEM.
How severe is CVE-2022-27502?: CVE-2022-27502 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-27502 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-27502?: CVE-2022-27502 affects Realvnc Vnc Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-27502?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-27502 published?: CVE-2022-27502 was published on 2022-06-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:realvnc:vnc_server:*:*:*:*:*:*:*:*

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