[UPDATE] [high] Adobe Connect: Multiple Vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities in Adobe Connect allow remote anonymous attackers to execute arbitrary code and perform cross-site scripting attacks.

Who is affected

All organizations and users deploying Adobe Connect.

Urgency

High; remote and unauthenticated exploitation is possible with code execution capability.

Action

Apply Adobe's security patches addressing CVE-2026-21331, CVE-2026-27243, CVE-2026-27245, CVE-2026-27246, CVE-2026-27302, CVE-2026-27303, CVE-2026-34614, and CVE-2026-34615.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

high

Published

2026-08-12

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1109

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-213310.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-272430.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-272450.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-272460.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-273020.57% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-273030.61% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-346140.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-346150.63% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-346170.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownNCSC-2026-0291 [1.00] [M/H] Vulnerabilities patched in Adobe Campaign Classicncsc-nl
• criticalCVE-2026-27302: Adobe Campaign Classic (ACC) is affected by an Incorrect Authorization vulnerability that coul…nvd

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