CVE-2025-67809: An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1

Routine

MEDIUM 4.7UPGRADE

CVE-2025-67809 is a medium-severity flaw (CVSS 4.7) affecting collaboration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A hardcoded Flickr API key and secret are present in the publicly accessible Flickr Zimlet used by Zimbra Collaboration. Because these credentials are embedded directly in the Zimlet, any unauthorized party could retrieve them and misuse the Flickr integration. An attacker with access to the exposed credentials could impersonate the legitimate application and initiate valid Flic

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-798
Published	2025-12-15
Last modified	2026-10-14

Publisher (CNA): MITRE · Vendor: zimbra

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-15 20:15 UTCPublished CVE record published
2026-10-14 17:10 UTCUpdated Record last modified

zimbra collaboration UPGRADE

Affected: >= 10.0.0 and < 10.1.13

Fixed in: 10.1.13

Safe to downgrade to: a release before 10.0.0

1. Check installed version

apt-cache policy collaboration || rpm -q collaboration || collaboration --version

2. UPGRADE to 10.1.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade collaboration

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade collaboration

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 10.0.0 (Debian / Ubuntu)

apt-cache madison collaboration sudo apt install collaboration=<VERSION_BEFORE_10.0.0> sudo apt-mark hold collaboration

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list collaboration sudo dnf downgrade collaboration-<VERSION_BEFORE_10.0.0> sudo dnf versionlock add collaboration

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-67809?

collaboration: upgrade to 10.1.13. Exact commands for each OS are on this page.

Is CVE-2025-67809 being exploited?

CVE-2025-67809 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-67809 affect?

CVE-2025-67809 affects collaboration. Severity is medium (CVSS 4.7). An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A hardcoded Flickr API key and secret are present in the publicly accessible Flickr Zimlet used by Zimbra Collaboration. Because these credentials are embedded directly in

How urgent is CVE-2025-67809?

Priority 22/100. No elevated risk signals yet.

Software pages

Zimbra vulnerabilities

Related CVEs

CVE-2025-27914 MEDIUM 5.4 UPGRADE An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1
CVE-2024-45515 MEDIUM 6.1 UPGRADE An issue was discovered in Zimbra Collaboration (ZCS) through 10.1
CVE-2024-33536 MEDIUM 5.4 UPGRADE An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0
CVE-2024-33535 HIGH 7.5 UPGRADE An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0
CVE-2024-33533 MEDIUM 5.4 UPGRADE An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0, issue 1 of 2

References

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