CVE-2025-49553Network attack vector

Session takeover via undisclosed DOM-based XSS

Published Oct 14, 2025 · Updated Oct 14, 2025

DOM-based XSS in Adobe Connect 12.9 and earlier allows remote attackers to execute scripts in a victim's browser via a crafted page. Adobe has not disclosed the affected client-side source or sink, so the exact unsafe DOM operation on attacker-controlled input is not public. Exploitation requires the victim to navigate to the crafted page and can enable session takeover, but the bulletin reports no availability impact.

CVSS severity9.3
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in Adobe Connect 12.9 and earlier allows remote attackers to execute scripts in a victim's browser via a crafted page. Adobe has not disclosed the affected client-side source or sink, so the exact unsafe DOM operation on attacker-controlled input is not public. Exploitation requires the victim to navigate to the crafted page and can enable session takeover, but the bulletin reports no availability impact.

The record

CVE
CVE-2025-49553
Published
Oct 14, 2025
Updated
Oct 14, 2025
Vendor
Adobe
Product
Adobe Connect
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=12.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Connectversion=0 <=12.9

Published CVSS scores

9.3Adobe Systems IncorporatedCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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