CVE-2026-21331
MediumCVSS 6.1Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. If an attacker convinces a victim to visit a URL referencing a vulnerable page, malicious JavaScript content may be executed within the context of the victim's browser. Scope is changed.
Risk Assessment
Risk of malicious script execution in the user's browser, potentially leading to session theft, account takeover, or other attacks.
Recommendation
It is recommended to update Adobe Connect to the latest version and educate users to click only on trusted links.
Other vulnerabilities in Adobe Connect
See all- CVE-2017-3101High
Adobe Connect versions 9.6.1 and earlier have a clickjacking vulnerability. Successful exploitation could lead to a clickjacking attack.
- CVE-2016-0948High
CVE-2016-0948 is a CSRF vulnerability in Adobe Connect before version 9.5.2 that allows remote attackers to hijack the authentication of unspecified victims via unknown vectors.
- CVE-2026-34660Critical
Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by an Incorrect Authorization vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to inject malicious scripts into a web page.
- CVE-2026-34659Critical
Adobe Connect versions 2025.9.15, 2025.8.157 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. An attacker could exploit this vulnerability to execute arbitrary code.
- CVE-2026-34615Critical
Adobe Connect versions 2025.3, 12.10 and earlier are affected by a deserialization of untrusted data vulnerability that could lead to arbitrary code execution in the context of the current user. An attacker can inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. User interaction is required. Scope is changed.
- CVE-2017-11291Critical
A Server-Side Request Forgery (SSRF) vulnerability was discovered in Adobe Connect 9.6.2 and earlier versions, which could be abused to bypass network access controls.
- CVE-2016-0949Critical
Adobe Connect before version 9.5.2 allows remote attackers to have an unspecified impact via a crafted parameter in a URL.
- CVE-2026-34617High
Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Cross-Site Scripting (XSS) vulnerability that could lead to privilege escalation. A low-privileged attacker can inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account.
- CVE-2026-34614Medium
Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker can trick a victim into visiting a crafted URL, leading to execution of malicious JavaScript in the victim's browser. Scope is changed.
Original NVD description (English source)
Adobe Connect versions 2025.3, 12.10 and earlier are 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. Scope is changed.