CVE-2020-7796
📛 CVE Title
Zimbra Collaboration: CVE-2020-7796: Server-Side Request Forgery (SSRF)
Description
Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- —
- CVSS score
- —
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- Effective score
- 9.8 / 10 CRITICAL source: NVD
- CWE(s)
- —
- Reserved
- —
- Published
- 2020-02-18 00:00 UTC
- Last updated
- —
- Source
- https://www.rapid7.com/db/vulnerabilities/zimbra-collaboration-cve-2020-7796/
- Linked Threat
- CVE-2020-7796 — Synacor Zimbra Collaboration Suite: Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability
CISA Known Exploited Vulnerabilities CISA KEV
CISA has confirmed in-the-wild exploitation of this CVE. Federal agencies must remediate by the due date below; private orgs should treat it as priority-1.
- Vulnerability name
- Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability
- Vendor / project
- Synacor
- Product
- Zimbra Collaboration Suite
- Date added to KEV
- 2026-02-17
- Remediation due
- 2026-03-10
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Ransomware campaign use
- Unknown
- CISA notes
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P7 ; https://nvd.nist.gov/vuln/detail/CVE-2020-7796
- CISA listing
- www.cisa.gov/known-exploited-vulnerabilities-catalog
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2020-02-18 22:15:10 UTC
- NVD last modified
- 2026-06-17 03:25:27 UTC
- NVD CVSS v3.1
- 9.8 / 10 CRITICAL source: nvd@nist.gov
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.8542 (probability of exploitation in next 30 days)
- EPSS percentile
- 99.69% vs all CVEs — higher = more likely to be exploited, as of 2026-06-29
NVD-assigned CWE(s):
CWE-918
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-06-30 01:10 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2020-28728 - Assigner
- mitre
- Published
- Feb 18, 2020, 9:14:22 PM
- Updated
- Feb 18, 2026, 4:56:25 AM
- EUVD base score (CVSS 3.1)
-
9.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EUVD-reported EPSS
- 84.4200
- Vendors
- n/a
- Products
-
n/a (n/a)
- Aliases
-
GHSA-qfxw-56c6-7pjg
ENISA description: Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.
EUVD references (1)
Affected products — CPE 2.3 (8) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:-:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p1:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p2:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p3:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p4:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p5:*:*:*:*:*:*cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p6:*:*:*:*:*:*
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (4)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- http://cwe.mitre.org/data/definitions/918.html rapid7:cwe.mitre.org
- https://attackerkb.com/topics/CVE-2020-7796 rapid7:attackerkb.com
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P7 rapid7:wiki.zimbra.com
- https://www.cve.org/CVERecord?id=CVE-2020-7796 rapid7:www.cve.org
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P7 cve@mitre.org Release NotesVendor Advisory
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P7 af854a3a-2127-422b-91ae-364da2661108 Release NotesVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7796 134c704f-9b21-4f2e-91b3-4a467353bcc0 US Government Resource
Indicators (2)
IOCs linked to the auto-promoted Threat row.
| Type | Value | VirusTotal | Attached |
|---|---|---|---|
| cwe |
CWE-918
|
no local data | 2026-05-14 02:58 UTC |
| cve |
CVE-2020-7796
|
no local data | 2026-05-14 02:58 UTC |
Remediations (15)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:blog.qualys.com
With Qualys Policy Audit's out-of-the-box mitigation or Compensatory Controls, which reduce the risk of a vulnerability being exploited because the remediation ( fix / patch ) cannot be done immediately, these security controls are not recommended by any industry standards, such as CIS and DISA-STIG.
2026-06-04 08:29 UTC -
web:blog.qualys.com
Microsoft's February 2026 Patch Tuesday focuses on closing security gaps that attackers could exploit, reinforcing the importance of timely patching in enterprise environments. Here's a quick breakdown of what you need to know. Microsoft Patch Tuesday for February 2026 This month's release addresses 61 vulnerabilities, including five critical and 52 important-severity vulnerabilities. In ...
2026-06-04 08:29 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-04 08:29 UTC -
web:support.esri.com
The C version of this patch also includes additional bug fixes not related to security, refer to the updated Issues Addressed with this Patch section for the latest details. April 20, 2026: The 11.4 version of the Portal for ArcGIS Security 2026 Update 1 Patch is now available.
2026-06-04 08:29 UTC -
web:www.cisa.gov
. For more information see MAR-251132.c1.v1 Exploitation of SharePoint Vulnerabilities and CISA Releases Malware Analysis Report Associated with Microsoft SharePoint Vulnerabilities. Update (07/31/2025): CISA has updated this alert to provide clarification on antivirus and endpoint detection and response (EDR) solutions, and details regarding mitigations related to the IIS server. Update (07 ...
2026-06-04 08:29 UTC -
web:www.forbes.com
Microsoft has confirmed that SharePoint Server is under mass global attack. Breaking: An emergency patch has now been released — update immediately.
2026-06-04 08:29 UTC -
web:www.microsoft.com
How can I get information about security vulnerabilities in Microsoft products and services? The Security Update Guide is the authoritative source of information for Microsoft security updates. The SUG helps IT professionals understand and use Microsoft security release information, processes, communications, and tools so they can manage organizational risk and develop a repeatable, effective ...
2026-06-04 08:29 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-06-04 08:29 UTC -
web:www.secure.com
Vulnerability Remediation Best Practices: Fix Flaws Before Attackers Find Them Learn vulnerability remediation best practices from risk-based prioritization to patch management and automation.
2026-06-04 08:29 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-06-04 08:29 UTC -
web:cybersecuritynews.com
Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.
2026-05-14 15:50 UTC -
web:www.cve.org
At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures
2026-05-14 15:50 UTC -
web:www.forbes.com
As security researchers warn about a dangerous Microsoft Windows update that isn't legitimate, users must pay close attention to what they are actually downloading.
2026-05-14 15:50 UTC -
web:www.malwarebytes.com
May's Patch Tuesday may not be the giant release many expected, but there are still plenty of important fixes that shouldn't be ignored.
2026-05-14 15:50 UTC -
CISA KEV
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Due date: 2026-03-10 Known ransomware campaign use: Unknown
2026-05-14 01:13 UTC
AI Forensic Analysis
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