CVE-2026-27303 json
Adobe Connect | Deserialization of Untrusted Data (CWE-502)
published 6mo ago modified 14d ago also EUVD-2026-22667
- cvss
- 9.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Adobe Adobe Connect 12.11
- Adobe Adobe Connect Desktop Application 2025.9
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6mo ago
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
Affected products
- Adobe Adobe Connect
- Adobe Adobe Connect Desktop Application
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
helpx.adobe.com
/security/products/connect/apsb26-37.html
vendor-advisory
Sources
- CVE List CVE-2026-27303
- NVD CVE-2026-27303
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