What is CVE-2021-34857?

CVE-2021-34857 is a high-severity vulnerability in Parallels Desktop, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2021-10-25.

How severe is CVE-2021-34857?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Parallels Desktop

CVE-2021-34857

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). An attacker must first obtain the ability to execute high-privileged code on the target guest system in order t…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (17.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Parallels Desktop — versions 16.1.3 (49160)
Parallels Parallels_desktop — versions 16.1.3

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

zdi-disclosures@trendmicro.com (Patch, x_refsource_MISC, Vendor Advisory)
zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-34857?: CVE-2021-34857 is a high-severity vulnerability in Parallels Desktop, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2021-10-25.
How severe is CVE-2021-34857?: High severity. CVSS v3 base score is 8.8 out of 10.