CVE-2026-73573 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-73573
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.45 Probability of exploitation activity being observed over the next 30 days (38th percentile)
CVSS score for CVE-2026-73573
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
3.1 Low
Products affected by CVE-2026-73573
Zimbra Collaboration Suite 8.6.0
Zimbra Collaboration Suite 8.7.11
Zimbra Collaboration Suite 8.8.10
Zimbra Collaboration Suite 8.8.11
Zimbra Collaboration Suite 8.8.12
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-73573 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
ID 1,323 7.99%
US 1,322 7.98%
RU 1,194 7.21%
BR 1,158 6.99%
DE 876 5.29%
VN 855 5.16%
FR 652 3.94%
IN 575 3.47%
IT 546 3.30%
CA 455 2.75%

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CVE-2026-73573 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 3,880 45.34%
Telecommunications 3,767 44.02%
Government/Politics 325 3.80%
Education 141 1.65%
Business Services 129 1.51%
Transportation 46 0.54%
Engineering 39 0.46%
Energy/Resources 36 0.42%
Finance 34 0.40%
Media/Entertainment 23 0.27%

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