TI-2021-04185 Aliases CVE-2021-21079 GHSA-4qph-vq25-gvfm

Adobe Connect Reflected Cross-site Scripting via archiveOffset parameter

LOW 29CWE-79Published 2021-03-12 · Updated 2025-04-23

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 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Adobe Connect version 11.0.7 (and earlier) is affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this vulnerability to inject malicious JavaScript content that may be executed within the context of the victim's browser when they browse to the page containing the vulnerable field.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01122 66th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Adobe	Connect	up to 11.0.7; up to None	—	No fix listed	CNA

Connect VendorAdobe Affected up to 11.0.7; up to None Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:adobe:connect::::::::	up to 11.0.7	Vulnerable	Adobe

cpe:2.3:a:adobe:connect:*:*:*:*:*:*:*:* Versions up to 11.0.7 Vulnerable ·Adobe

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-21079
2026-10-03 Alias added: GHSA-4qph-vq25-gvfm

References

Advisory 1

https://helpx.adobe.com/security/products/connect/apsb21-19.html

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