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TI-2021-17671 Aliases CVE-2021-40721GHSA-fwq9-fc5m-x5cc

Adobe Connect Reflected Cross Site Scripting

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Adobe Connect version 11.2.3 (and earlier) is affected by a reflected Cross-Site Scripting (XSS) vulnerability. If an attacker is able to convince a victim to visit a URL referencing a vulnerable page, malicious JavaScript content may be executed within the context of the victim's browser.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01008 63rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdobeConnectup to 11.2.3; up to None—No fix listedCNA
  • Connect VendorAdobe Affected up to 11.2.3; up to None Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:adobe:connect:*:*:*:*:*:*:*:*11.0 – 11.2.3VulnerableAdobe
  • cpe:2.3:a:adobe:connect:*:*:*:*:*:*:*:* Versions 11.0 – 11.2.3 Vulnerable ·Adobe

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40721
  2. 2026-10-03 Alias added: GHSA-fwq9-fc5m-x5cc

References

Patch 1

  • TI-2023-08504 Adobe Connect Improper Access Control Security feature bypass CVSS 3.1MEDIUM 5.3
  • TI-2021-17669 Adobe Connect Deserialization of Untrusted Data Remote Code Execution CVSS 3.0CRITICAL 9.8
  • TI-2018-09178 Improper authentication in Adobe Connect 9.7.5 and earlier CVSS 3.0CRITICAL 9.8
  • TI-2023-04295 RCE in Saphira Connect CVSS 3.1CRITICAL 9.8
  • TI-2023-04294 SQLi in Saphira Connect CVSS 3.1CRITICAL 9.8
  • TI-2017-08334 Server-side request forgery in Adobe Connect 9.6.2 and earlier versions CVSS 3.0CRITICAL 10.0
See all 82 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences