CVE-2021-34998

Name: CVE-2021-34998
Creator: NVD / NIST
Published: 2022-01-13T22:15:13.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2021-34998 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. This vulnerability allows local attackers to escalate privileges on affected installations of Panda Security Free Antivirus 20.2.0.0. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Panda Security Free Antivirus 20.2.0.0. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the use of named pipes. The issue results from allowing an untrusted process to impersonate the client of a pipe. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-14208.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.37%

28.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Watchguard	Panda Antivirus	< 20.02.00

References

https://www.pandasecurity.com/en/support/card?id=100077Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1336/Third Party Advisory, VDB Entry
https://www.pandasecurity.com/en/support/card?id=100077Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1336/Third Party Advisory, VDB Entry

Timeline

Published: Jan 13, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-34998?

How severe is CVE-2021-34998?

CVE-2021-34998 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34998?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34998?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST