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CVE-2020-18985

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers...

6.1 Medium

CVE-2020-18985 is a medium vulnerability (CVSS 6.1) in Synacor Zimbra Collaboration Suite, published December 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.68%, the 52nd percentile. No source names a fixed version.

What does this mean?
Severity
6.1 MediumCVSS 3.1, NVD
Exploit chance
0.68%EPSS, 52nd percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.68%Up 0.2 points since Dec 16, 2021
90%50%10%1%

Affected products

What each source reports

NVD Score used6.1

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.

Record
CVE-2020-18985
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0
5.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness
CWE-601
Updated
2026-11-02
CVE ListNo score

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.

Record
CVE-2020-18985
Updated
2026-11-02
EUVDEUVD-2020-10896No score

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.

Record
EUVD-2020-10896
Updated
2026-11-03
GitHub AdvisoriesGHSA-h95g-226g-7wq6No score

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers...

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.

Record
GHSA-h95g-226g-7wq6
Weakness
CWE-601
Updated
2026-11-02
OSV6.1

An issue in /domain/service/.ewell-known/caldav of Zimbra Collaboration 8.8.12 allows attackers to redirect users to any arbitrary website of their choosing.

Record
CVE-2020-18985
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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