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Known exploited vulnerability

CVE-2020-7796

criticalCVSS 3.1 9.8In CISA KEVEPSS 94%Published · n/a

The short answer

CVE-2020-7796 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-02-17: attackers are using it, so patch it first.

What it is

Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.

Weakness: CWE-918.

Severity

9.8 critical

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

Exploited (CISA KEV)

Yes, since Feb 17, 2026

Federal due date Mar 10, 2026

EPSS, next 30 days

94%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

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

Affected products

n/a. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2020-7796 being exploited?

Yes. CISA added CVE-2020-7796 to its Known Exploited Vulnerabilities catalog on 2026-02-17, with a federal remediation due date of 2026-03-10.

How do I fix CVE-2020-7796?

CISA's 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.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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