Auth bypass in Zzcms

CVE-2021-45347

An Incorrect Access Control vulnerability exists in zzcms 8.2, which lets a malicious user bypass authentication by changing the user name in the cookie to use any password.

Vulnerability class: Broken Authentication

EPSS: 0.012 (64.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

  • Zzcms — versions 8.2
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-45347?
CVE-2021-45347 is a high-severity vulnerability in Zzcms, classified under Improper Authentication. CVSS score: 7.5/10. Published 2022-02-14.
How severe is CVE-2021-45347?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-45347 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.