CVE-2023-28277Network attack vector

Information disclosure via undisclosed integer overflow

Published Apr 11, 2023 · Updated Jan 23, 2025

Integer overflow in Microsoft Windows DNS Server on Windows Server 2022 before 10.0.20348.1668 allows remote authenticated users to read data. Microsoft identifies CWE-190 but has not published the affected function, arithmetic operation, or data exposed by the resulting overflow. Exploitation requires high privileges and a host running the DNS Server role; integrity and availability are unaffected.

CVSS severity4.9
Medium
EPSS probability1.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Integer overflow in Microsoft Windows DNS Server on Windows Server 2022 before 10.0.20348.1668 allows remote authenticated users to read data. Microsoft identifies CWE-190 but has not published the affected function, arithmetic operation, or data exposed by the resulting overflow. Exploitation requires high privileges and a host running the DNS Server role; integrity and availability are unaffected.

The record

CVE
CVE-2023-28277
Published
Apr 11, 2023
Updated
Jan 23, 2025
Vendor
Microsoft
Product
Windows Server 2022
Classifications
CWE-190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.20348.0 <10.0.20348.1668

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.1668

Published CVSS scores

4.9Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo