What is CVE-2021-30356?

CVE-2021-30356 is a high-severity vulnerability in Checkpoint Identity Agent, classified under Improper Link Resolution Before File Access. CVSS score: 8.1/10. Published 2021-04-22.

How severe is CVE-2021-30356?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Checkpoint Identity Agent

CVE-2021-30356

A denial of service vulnerability was reported in Check Point Identity Agent before R81.018.0000, which could allow low privileged users to overwrite protected system files.

Published 2021-04-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Checkpoint Identity Agent
Check Point Identity Agent — versions before R81.018.0000

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

supportcontent.checkpoint.com/solutions (Vendor Advisory)

Frequently asked questions

What is CVE-2021-30356?: CVE-2021-30356 is a high-severity vulnerability in Checkpoint Identity Agent, classified under Improper Link Resolution Before File Access. CVSS score: 8.1/10. Published 2021-04-22.
How severe is CVE-2021-30356?: High severity. CVSS v3 base score is 8.1 out of 10.