What is CVE-2023-26562?

CVE-2023-26562 is a medium-severity vulnerability in Zimbra Collaboration, classified under Missing Authorization. CVSS score: 6.5/10. Published 2024-02-13.

How severe is CVE-2023-26562?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2023-26562 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Zimbra Collaboration

CVE-2023-26562

In Zimbra Collaboration (ZCS) 8.8.15 and 9.0, a closed account (with 2FA and generated passwords) can send e-mail messages when configured for Imap/smtp.

Vulnerability class: Broken Access Control

EPSS: 0.006 (43.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Zimbra Collaboration — versions 8.8.15, 9.0.0
N/a — versions n/a

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Release Notes)
cve@mitre.org (Product)

Frequently asked questions

What is CVE-2023-26562?: CVE-2023-26562 is a medium-severity vulnerability in Zimbra Collaboration, classified under Missing Authorization. CVSS score: 6.5/10. Published 2024-02-13.
How severe is CVE-2023-26562?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-26562 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.