Synacor Zimbra Collaboration Suite 8.7.x through 8.8.11 allows insecure object deserialization in the IMAP component.
Priority MEDIUM 49CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-502.
Summary
Synacor Zimbra Collaboration Suite 8.7.x through 8.8.11 allows insecure object deserialization in the IMAP component.
Why it matters now
EPSS 0.03838 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 25
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* | 8.7.0 to before 8.7.11; 8.8.0 to before 8.8.9 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:-:*:*:*:*:*:* | 8.7.11 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p1:*:*:*:*:*:* | 8.7.11 p1 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p2:*:*:*:*:*:* | 8.7.11 p2 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p3:*:*:*:*:*:* | 8.7.11 p3 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p4:*:*:*:*:*:* | 8.7.11 p4 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p5:*:*:*:*:*:* | 8.7.11 p5 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p6:*:*:*:*:*:* | 8.7.11 p6 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p7:*:*:*:*:*:* | 8.7.11 p7 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p8:*:*:*:*:*:* | 8.7.11 p8 | Vulnerable | Synacor |
- cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* Versions 8.7.0 to before 8.7.11; 8.8.0 to before 8.8.9 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:-:*:*:*:*:*:* Versions 8.7.11 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p1:*:*:*:*:*:* Versions 8.7.11 p1 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p2:*:*:*:*:*:* Versions 8.7.11 p2 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p3:*:*:*:*:*:* Versions 8.7.11 p3 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p4:*:*:*:*:*:* Versions 8.7.11 p4 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p5:*:*:*:*:*:* Versions 8.7.11 p5 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p6:*:*:*:*:*:* Versions 8.7.11 p6 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p7:*:*:*:*:*:* Versions 8.7.11 p7 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p8:*:*:*:*:*:* Versions 8.7.11 p8 Vulnerable ·Synacor
Show 15 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:-:*:*:*:*:*:* | 8.8.9 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p1:*:*:*:*:*:* | 8.8.9 p1 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p2:*:*:*:*:*:* | 8.8.9 p2 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p3:*:*:*:*:*:* | 8.8.9 p3 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p4:*:*:*:*:*:* | 8.8.9 p4 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p6:*:*:*:*:*:* | 8.8.9 p6 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p7:*:*:*:*:*:* | 8.8.9 p7 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p8:*:*:*:*:*:* | 8.8.9 p8 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:-:*:*:*:*:*:* | 8.8.10 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p2:*:*:*:*:*:* | 8.8.10 p2 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p3:*:*:*:*:*:* | 8.8.10 p3 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p4:*:*:*:*:*:* | 8.8.10 p4 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p6:*:*:*:*:*:* | 8.8.10 p6 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.11:-:*:*:*:*:*:* | 8.8.11 | Vulnerable | Synacor |
| cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.11:p2:*:*:*:*:*:* | 8.8.11 p2 | Vulnerable | Synacor |
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:-:*:*:*:*:*:* Versions 8.8.9 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p1:*:*:*:*:*:* Versions 8.8.9 p1 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p2:*:*:*:*:*:* Versions 8.8.9 p2 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p3:*:*:*:*:*:* Versions 8.8.9 p3 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p4:*:*:*:*:*:* Versions 8.8.9 p4 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p6:*:*:*:*:*:* Versions 8.8.9 p6 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p7:*:*:*:*:*:* Versions 8.8.9 p7 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p8:*:*:*:*:*:* Versions 8.8.9 p8 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:-:*:*:*:*:*:* Versions 8.8.10 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p2:*:*:*:*:*:* Versions 8.8.10 p2 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p3:*:*:*:*:*:* Versions 8.8.10 p3 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p4:*:*:*:*:*:* Versions 8.8.10 p4 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p6:*:*:*:*:*:* Versions 8.8.10 p6 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.11:-:*:*:*:*:*:* Versions 8.8.11 Vulnerable ·Synacor
- cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.11:p2:*:*:*:*:*:* Versions 8.8.11 p2 Vulnerable ·Synacor
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-6980
- 2026-10-03 Alias added: GHSA-r63j-4gxh-8m32
- 2026-10-20 EPSS moved to the 90th–95th percentile
References
More Synacor Zimbra Collaboration Suite vulnerabilities
- TI-2024-30554 The postjournal service in Zimbra Collaboration (ZCS) before 8.8.15 Patch 46, 9 before… KEVCVSS 3.1CRITICAL 10.0
- TI-2022-19841 An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0. KEVCVSS 3.1CRITICAL 9.8
- TI-2022-17239 Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that… KEVCVSS 3.1CRITICAL 9.8
- TI-2022-10792 Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-06312 Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is… KEVCVSS 3.1CRITICAL 9.8
- TI-2019-07076 mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-6980 · CVE Program
- CVE-2019-6980 · NVD
- FIRST EPSS
- GHSA-r63j-4gxh-8m32 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences