9.6

CVE-2026-27303: adobe adobe connect Deserialization of Untrusted Data

CVSS: 9.6v3.1CriticalAnalyzed
Published 14-04-2026Last modified 27-08-2026
Open JSON

Vulnerability summary

CVE-2026-27303 is a critical (CVSS 9.6) Deserialization of Untrusted Data vulnerability in adobe adobe connect. EPSS estimates a 1.87% chance of exploitation in the next 30 days, higher than 79% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.6/10
010
Critical · v3.1 (CVE.org)
EPSS score
1.87%
0%100%
Low · +1.26 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-04-2026
    PublishedVulnerability first disclosed.
  2. 27-08-2026
    Last modifiedVulnerability information updated.

Description

Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.87%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

+1.26 pp

From 0.61% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Adobe4 products

1 vendor · 4 products

References

1 links