CVE-2025-53783
CVE-2025-53783 is a high-severity vulnerability in Microsoft Dynamics 365 Guides with a CVSS 3.x base score of 7.5. 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-122.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-24283
- Weakness: CWE-122
- Affected product: Microsoft Dynamics 365 Guides
- Published:
- Last modified:
Description
Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
Frequently asked questions
- What is CVE-2025-53783?
- Heap-based buffer overflow in Microsoft Teams allows an unauthorized attacker to execute code over a network.
- How severe is CVE-2025-53783?
- CVE-2025-53783 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-53783 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-53783?
- CVE-2025-53783 primarily affects Microsoft Dynamics 365 Guides. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2025-53783?
- 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.
- Does CVE-2025-53783 have an EU (EUVD) identifier?
- Yes. CVE-2025-53783 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24283.
- When was CVE-2025-53783 published?
- CVE-2025-53783 was published on 2025-08-12 and last updated on 2026-06-17.
References
Affected products (8)
- cpe:2.3:a:microsoft:dynamics_365_guides:*:*:*:*:*:hololens:*:*
- cpe:2.3:a:microsoft:dynamics_365_remote_assist:*:*:*:*:*:hololens:*:*
- cpe:2.3:a:microsoft:teams:*:*:*:*:*:android:*:*
- cpe:2.3:a:microsoft:teams:*:*:*:*:*:iphone_os:*:*
- cpe:2.3:a:microsoft:teams:*:*:*:*:*:macos:*:*
- cpe:2.3:a:microsoft:teams:*:*:*:*:desktop:*:*:*
- cpe:2.3:a:microsoft:teams_panels:*:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:teams_phones:*:*:*:*:*:*:*:*
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