Security readout for executives and security teams
Plain-English summary
Zimbra Collaboration Suite 8.8.15 and 9.0 contain a critical flaw allowing an unauthenticated remote attacker to upload files outside the intended directory and potentially execute code. Successful compromise could expose mail, alter systems, disrupt service, and provide a foothold into the organization.
Executive priority
Treat as an immediate remediation and compromise-assessment priority. The combination of unauthenticated remote code execution, critical impact, and confirmed KEV listing creates substantial business risk. Prioritize internet-accessible mail infrastructure and validate that patching alone has not overlooked an earlier compromise.
Technical view
The mboximport function accepts and extracts ZIP archives without requiring an authentication token. Insufficient path validation enables directory traversal and arbitrary file placement, leading to remote code execution. The issue is an incomplete fix for CVE-2022-27925 and carries CVSS 3.1 score 9.8 under CWE-22.
Likely exposure
Organizations running Zimbra Collaboration Suite 8.8.15 or 9.0 should consider themselves potentially exposed, particularly when affected services are network-accessible. The supplied sources do not identify exact patched releases, affected configurations, or reliable external detection indicators.
Exploitation context
CISA lists CVE-2022-37042 in its Known Exploited Vulnerabilities catalog, supporting active exploitation in the wild. Exploitation requires no privileges or user interaction and has low attack complexity, according to the supplied CVSS vector. The bundle does not describe campaign scope or specific threat actors.
Researcher notes
Assessment is limited by the bundle: it names affected versions and vulnerability mechanics but not fixed builds, indicators, or exploitation telemetry. Review should account for the incomplete CVE-2022-27925 fix and distinguish this issue from the earlier flaw. Avoid assuming absence of compromise solely from version remediation.
Mitigation direction
- Identify all Zimbra Collaboration Suite instances and record their exact versions.
- Consult current Zimbra security advisories for the vendor-approved fixed release and apply it urgently.
- Restrict network access to affected Zimbra services until remediation is confirmed.
- Follow incident-response procedures if unauthorized files or execution indicators are discovered.
Validation and detection
- Confirm whether each instance runs Zimbra Collaboration Suite 8.8.15 or 9.0.
- Verify the installed release against Zimbra's current security advisory.
- Review relevant systems for unexpected files, modifications, or execution activity.
- Confirm affected services are not unnecessarily exposed to untrusted networks.
- After remediation, verify the approved fixed release is installed across every instance.
Public sources used
The source record changed after analysis: Material source record changed after analysis.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-37042 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
SSVC decision data
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:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2022-37042 added to CISA KEV
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2022-08-11T00:00:00.000Z: CVE-2022-37042 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesCVE reference, mitre · x_refsource_MISC
- https://wiki.zimbra.com/wiki/Security_CenterCVE reference, mitre · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-37042CVE reference, CISA-ADP · 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.