CVE-2020-13653

moderate-risk

Published 2020-07-02

An XSS vulnerability exists in the Webmail component of Zimbra Collaboration Suite before 8.8.15 Patch 11. It allows an attacker to inject executable JavaScript into the account name of a user's profile. The injected code can be reflected and executed when changing an e-mail signature.

Do I need to act?

1.2% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.1/10 Medium

NETWORK / LOW complexity

Affected Products (12)

Zimbra Collaboration Suite

Affected Vendors

Synacor

References (8)

Release Notes https://wiki.zimbra.com/wiki/Security_Center

Release Notes https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P11

Release Notes https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P4

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

Release Notes https://wiki.zimbra.com/wiki/Security_Center

Release Notes https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P11

Release Notes https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P4

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

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moderate-risk

Severity 23/34 · High

Exploitability 4/34 · Minimal

Exposure 17/34 · Moderate