Security readout for executives and security teams
CVE-2019-9621 affects older Zimbra Collaboration Suite releases and lets an unauthenticated attacker make the server send unintended internal requests through ProxyServlet. For leaders, the risk is exposed email infrastructure becoming a pivot point into sensitive internal services. CISA KEV listing means known exploitation has occurred. Organizations running internet-facing Zimbra Collaboration Suite below the named patch levels are the primary exposure. Email platforms are commonly externally reachable, so legacy or forgotten Zimbra instances deserve priority inventory and verification. Treat this as urgent for any exposed Zimbra deployment because it is in CISA KEV and affects a high-value email platform. Patch or isolate affected systems before routine backlog work. Mitigation focus: Upgrade Zimbra to a release at or above the fixed patch levels named in the CVE.; Review Zimbra security advisories and Security Center guidance for deployment-specific remediation details.; Restrict internet exposure to Zimbra services where business requirements allow..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-9621 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesCVE reference · x_refsource_CONFIRM
- https://wiki.zimbra.com/wiki/Security_CenterCVE reference · x_refsource_MISC
- https://bugzilla.zimbra.com/show_bug.cgi?id=109127CVE reference · x_refsource_MISC
- 46693CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://blog.zimbra.com/2019/03/9826/CVE reference · x_refsource_MISC
- https://blog.tint0.com/2019/03/a-saga-of-code-executions-on-zimbra.htmlCVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9621CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.