CVE-2023-28310
Published: 14 June 2023
Summary
CVE-2023-28310 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Microsoft Exchange Server. Its CVSS base score is 8.0 (High).
Operationally, ranked in the top 5.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Microsoft Exchange Server is affected by CVE-2023-28310, a remote code execution vulnerability published on 14 June 2023 and assigned a CVSS 3.1 base score of 8.0. The flaw is also associated with CWE-502 (deserialization of untrusted data) and carries the vector AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating high impact across confidentiality, integrity, and availability.
An attacker with low privileges and adjacent-network access can exploit the issue without user interaction to achieve arbitrary code execution on the Exchange server, resulting in full compromise of the affected system.
Microsoft security advisories at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28310 provide official guidance and patches. The associated EPSS score has remained flat at a peak and current value of 0.1252 with no material rise observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-32017
Vulnerability details
Microsoft Exchange Server Remote Code Execution Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.