SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-4921

Adobe Connect versions 9.7 and earlier have an exploitable unrestricted SWF file upload vulnerability.

MEDIUM 6.1EPSS 3.55%

Does this matter?

Lower severity and a low EPSS score (3.55%). Track it; it rarely justifies an emergency change on its own.

Description

Adobe Connect versions 9.7 and earlier have an exploitable unrestricted SWF file upload vulnerability. Successful exploitation could lead to information disclosure.

CVSS 3.0
6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
3.55% probability · 89th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-434
Affected
adobe/connect
Source
psirt@adobe.com
EPSS trend
0%5%10%21 September 2026: 5.22%22 September 2026: 4.20%27 October 2026: 3.55%21 September 202627 October 2026

EPSS moved from 5.2% on 21 September 2026 to 3.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.