How severe is CVE-2026-27243?

CVE-2026-27243 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-27243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27243?

CVE-2026-27243 primarily affects Adobe Connect. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-27243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-27243 have an EU (EUVD) identifier?

Yes. CVE-2026-27243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22661.

When was CVE-2026-27243 published?

CVE-2026-27243 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-27243

CVE-2026-27243 is a critical-severity vulnerability in Adobe Connect with a CVSS 3.x base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22661
Weakness: CWE-79
Affected product: Adobe Connect
Published: 2026-04-14
Last modified: 2026-06-17

Description

Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.

Frequently asked questions

What is CVE-2026-27243?: Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this vulnerability to inject malicious scripts into a web page, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.
How severe is CVE-2026-27243?: CVE-2026-27243 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-27243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27243?: CVE-2026-27243 primarily affects Adobe Connect. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-27243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-27243 have an EU (EUVD) identifier?: Yes. CVE-2026-27243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22661.
When was CVE-2026-27243 published?: CVE-2026-27243 was published on 2026-04-14 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/connect/apsb26-37.html

Affected products (3)

cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*
cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:*
cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:windows:*:*

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