CVE-2020-7796

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

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

8.9/10

General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 9.8: +1.47
Fresh EPSS: 93.59%: +0.47

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 5 documents and public datasets.

Hype components

Headline sample (25%)

0/100

Press, 30 days (60%)

0/100

Grounded branding (15%)

0/100

HYPE TOTAL0/100

Sources and documents

Hong Kong Computer Emergency Response Team Coordination Centre

Press · 24 Jul 2026, 07:00 · Multiple Vulnerabilities in Internet-Facing Systems Targeting Hong Kong’s Education Sector - Hong Kong Computer Emergency Response Team Coordination Centre

Security Affairs

Press · 10 Jul 2026, 07:00 · Update Now: Critical Zimbra Classic Web Client Flaw Could Expose Mailboxes - Security Affairs

The Hacker News

Press · 18 Feb 2026, 08:00 · CISA Flags Four Security Flaws Under Active Exploitation in Latest KEV Update - The Hacker News

Computer Weekly

Press · 18 Feb 2026, 08:00 · Flaws in Google and Microsoft products added to Cisa catalogue - Computer Weekly

GreyNoise

Press · 11 Mar 2025, 07:00 · New SSRF Exploitation Surge Serves as a Reminder of 2019 Capital One Breach - GreyNoise

Score evolution

● Hype ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.9 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence: Exploitation recorded
Priority basis: Recorded exploitation; CVSS 9.8; EPSS 93.6%
Attention, last 30 days: 0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential: network access, no prior privileges, no user interaction.
Observed activity: Exploitation recorded in CISA KEV.
Known scale: Not quantified.
Evidence confidence basis: Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:20.659321+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

Published

18 Feb 2020, 21:14

First press mention

11 Mar 2025, 07:00

Added to the CISA KEV catalog

17 Feb 2026, 00:00

Latest press mention

24 Jul 2026, 07:00

Score calculated

05 Nov 2026, 13:58