CVE-2023-29369
About
Remote Procedure Call Runtime Denial of Service Vulnerability
Rainforest analyst review
The Windows RPC Runtime can be driven into a denial of service by this flaw, triggered by an attacker with low privileges. The impact is availability-only, no code execution, no data exposure, and it affects the Server 2012 through 2022 line. The 6.5 reflects a disruption-grade issue rather than anything that grants an attacker control or access.
DoS against a core runtime is annoying but bounded: it can degrade or interrupt services relying on RPC, yet it requires an authenticated low-privilege foothold and yields the attacker no persistence or escalation on its own. There is no unauthenticated internet-spray dynamic here, so the exploitation tempo is modest and the realistic scenario is an already-present low-tier account causing disruption.
We rank this in the routine tier and let it flow through the standard Patch Tuesday cadence for the affected Server versions. Given the availability-only impact and the privilege precondition, there is little to virtually patch; our attention is better spent confirming rollup coverage on those servers than treating this as an out-of-band concern.
References
Related CVEs
Frequently asked questions
What is CVE-2023-29369?
Remote Procedure Call Runtime Denial of Service Vulnerability
How severe is CVE-2023-29369?
CVE-2023-29369 carries a CVSS 3.1 base score of 6.5, rated medium. On the Rainforest Risk Index — which weighs the severity alongside how easy the flaw is to reach and how broad its impact is — it scores 65 out of 100, in the elevated band.
How is CVE-2023-29369 exploited?
According to the CVSS vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H): attack vector Network, attack complexity Low, privileges required Low, user interaction None. Impact on confidentiality None, integrity None and availability High.
Which products are affected by CVE-2023-29369?
Public advisories list the following as affected: windows server 2012, windows server 2016, windows server 2019, windows server 2022. Check the references on this page for the exact versions each vendor confirms.
How do I fix CVE-2023-29369?
Apply the fix the vendor published — the references on this page link to the primary advisories and patches. When patching can't happen right away, reduce the exposure of the affected component and watch it for exploitation attempts. Rainforest customers see this vulnerability correlated to their own assets and prioritized by real exposure, not by score alone.
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