Synacor Zimbra Collaboration Suite (ZCS) Improper Restriction of XML External Entity Reference (CVE-2019-9670)
Severity: critical · Patch status: patched · Since 2022-01-10 · CVE-2019-9670
Synacor Zimbra Collaboration Suite (ZCS) contains an improper restriction of XML external entity (XXE) vulnerability in the mailboxd component. CISA added CVE-2019-9670 to its Known Exploited Vulnerabilities catalog on Jan 10, 2022, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Jul 10, 2022 (BOD 22-01); treat that as the outer limit.
Sources
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