Is CVE-2020-7796 actively exploited?

Yes. CVE-2020-7796 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2020-7796 be exploited remotely?

Yes. CVE-2020-7796 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-7796?

CVE-2020-7796 has a CVSS score of 9.8 (CRITICAL) and an EPSS exploitation probability of 93.55%.

HOME VULNERABILITIESCVE-2020-7796

CRITICALCISA KEVIN THE WILD

CVE-2020-7796

Published: February 17, 2026

9.8

CVSS v3.1

EPSS:93.55%probability of exploitation in 30 daysPercentile:99.8th

Official Description

Synacor Zimbra Collaboration Suite (ZCS) contains a server-side request forgery vulnerability if WebEx zimlet installed and zimlet JSP is enabled.

NVD Source

CISA KEV Advisory

Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability

Synacor Zimbra Collaboration Suite (ZCS) contains a server-side request forgery vulnerability if WebEx zimlet installed and zimlet JSP is enabled.

Added to KEV: 2026-02-17Federal patch deadline: 2026-03-10

Required Action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Risk Analysis

A server-side request forgery (SSRF) vulnerability exists in Synacor Zimbra Collaboration Suite (ZCS) if the WebEx zimlet is installed and zimlet JSP is enabled. This critical vulnerability, with a CVSS score of 9.8 and an EPSS score of 0.93550, is actively exploited and listed in CISA's KEV, indicating extreme urgency.

This vulnerability is actively being exploited in the wild. The flaw is remotely exploitable without authentication and with low attack complexity.

Recommended Action

Update Synacor Zimbra Collaboration Suite (ZCS) to a patched version. Disable the WebEx zimlet and zimlet JSP if not in use.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2020-7796 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CISA has added CVE-2020-7796 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

News & Research Mentioning CVE-2020-7796

CISA Adds Four Known Exploited Vulnerabilities to Catalog

CISA Alerts· Feb 17, 2026

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2008-0015 Microsoft Windows Video ActiveX Control Remote Code Execution Vulnerability CVE-2020-7796 Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability CVE-2024-7694 TeamT5 ThreatSonar Anti-Ransomware Unrestricted Upload of File with Dangerous Type Vulnerability CVE-2026-2441 Google Chromium CSS Use-After-Free Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the [xlite_meta score:57 src:CISA Alerts xlite_fp:0151606efb7c3597e4acbd0d824dcee382a174d70f7753422aa0e45dddd065c7]