RLSA-2023:5837: nghttp2 security update

RLSA-2023:5837, released December 5, 2025, fixes 1 CVE in nghttp2 (version 0:1.33.0-5.el8_8). One of them is being exploited (CVE-2023-44487); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEV

CVEs closed

None rated Critical

Exploited

CVE-2023-44487

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

1.0000

99th percentile

Fixed package versions

Product	Release	Fixed in
nghttp2	rocky 8	0:1.33.0-5.el8_8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2023-44487	MITRE: CVE-2023-44487 HTTP/2 Rapid Reset Attack	7.5	1.0000	KEVExploited

Also fixes CVE-2023-44487

KB5031364
Windows Server 2022, Windows Server 2022 (Server Core installation)
KB5031361
Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for ARM64-based Systems, Windows 10 Version 1809 for x64-based Systems and 2 more
KB5031354
Windows 11 Version 22H2 for ARM64-based Systems, Windows 11 Version 22H2 for x64-based Systems
KB5031358
Windows 11 version 21H2 for ARM64-based Systems, Windows 11 version 21H2 for x64-based Systems
KB5031356
Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 3 more
KB5031362
Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more
KB5032875
.NET 7.0
KB5032874
.NET 6.0

Vendor advisory

https://errata.rockylinux.org/RLSA-2023:5837

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/rlsa-2023-5837">RLSA-2023:5837 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.