CVE-2026-78463
CVE-2026-78463 is a high-severity vulnerability in Microsoft Remote Desktop Client with a CVSS 3.x base score of 8.8. 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-94.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (57th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Microsoft Remote Desktop Client
- Published:
- Last modified:
Description
Improper control of generation of code ('code injection') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Frequently asked questions
- What is CVE-2026-78463?
- Improper control of generation of code ('code injection') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- How severe is CVE-2026-78463?
- CVE-2026-78463 has a CVSS 3.x base score of 8.8, rated high 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 high.
- Is CVE-2026-78463 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-78463?
- CVE-2026-78463 affects Microsoft Remote Desktop Client. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-78463?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-78463 published?
- CVE-2026-78463 was published on 2026-09-08 and last updated on 2026-09-22.
References
Affected products (1)
- cpe:2.3:a:microsoft:remote_desktop_client:*:*:*:*:*:windows:*:*
More vulnerabilities in Microsoft Remote Desktop Client
- CVE-2026-80077 — High (CVSS 8.8): Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-80074 — High (CVSS 8.8): Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-42985 — High (CVSS 8.8): Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-32157 — High (CVSS 8.8): Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2025-58718 — High (CVSS 8.8): Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2025-48817 — High (CVSS 8.8): Relative path traversal in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
All CVEs affecting Microsoft Remote Desktop Client →
Other CWE-94 (Code Injection) vulnerabilities
- CVE-2026-105857 — Critical (CVSS 10.0): Payload is a free and open source headless content management system. In @payloadcms/plugin-form-builder versions…
- CVE-2026-55107 — Critical (CVSS 10.0): Kobako is a Ruby gem that embeds a Wasm-isolated mruby interpreter inside applications, allowing execution of untrusted…
- CVE-2026-96349 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in SiteSkite <= 2.1.8 versions.
- CVE-2026-102425 — Critical (CVSS 10.0): Joomla Extension - balbooa.com - Unauthenticated RCE via field shortcode injection in Balbooa Forms < 2.4.3.4 - Balbooa…
- CVE-2026-89275 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability…
- CVE-2026-84412 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability…