CVE-2026-73573

MEDIUM

6.5

CVSS Score

Published: August 13, 2026 at 03:22 PM UTC

Updated: August 28, 2026 at 02:12 PM UTC

4 products affected across 2 vendorsCollaborationZimbra Collaboration SuiteCollaboration

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document editing functionality due to improper validation of the packages parameter. An authenticated attacker can exploit this vulnerability by supplying a crafted path traversal sequence, potentially allowing unauthorized disclosure of sensitive files within the web application directory.

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

6.5MEDIUM[email protected]

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

Vector?

Quick Info

StatusANALYZED

CWE

CWE-24

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