CVE-2026-73575

LOW

3.5

CVSS Score

Published: August 13, 2026 at 03:24 PM UTC

Updated: August 28, 2026 at 01:32 PM UTC

4 products affected across 2 vendorsCollaborationZimbra Collaboration SuiteCollaboration

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Severity

LOW3.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange Web Services (EWS) endpoint of Zimbra Collaboration (ZCS) due to insufficient validation of request content types. An attacker can exploit this vulnerability by causing an authenticated user to submit a crafted request, potentially allowing unauthorized actions to be performed on behalf of the victim.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Zimbra Collaboration Suite · Synacor

95%

v < 10.1.17

Affected range stops below 10.1.17, so it looks safe — our inference, not a vendor statement

Collaboration · Zimbra

95%

v < 10.1.17

Affected range stops below 10.1.17, so it looks safe — our inference, not a vendor statement

Collaboration · Synacor

75%

v < 10.1.17

Affected range stops below 10.1.17, so it looks safe — our inference, not a vendor statement

Zimbra Collaboration Suite · Zimbra

60%

v < 10.1.17

Affected range stops below 10.1.17, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory

Source: cverecord

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Vendor Advisory

Source: cverecord

https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.5LOW[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-352

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