← Vulnerability feed

Vulnerability record · CVE-2024-27983 · published 9 April 2024

CVE-2024-27983: Race condition vulnerability

An attacker can make the Node.js HTTP/2 server completely unavailable by sending a small amount of HTTP/2 frames packets with a few HTTP/2 frames inside. It is possible to leave some data in nghttp2 memory after reset when headers with HTTP/2 CONTINUATION frame are sent to the server and then a TCP connection is abruptly closed by the client triggering the Http2Session destructor while header frames are still being processed (and stored in memory) causing a race condition.

8.2 CVSS 3.0 High EPSS 87% · top 0.3% CWE-362 · Race condition Deferred
8.2CVSS 3.0 base score
87%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

An attacker can make the Node.js HTTP/2 server completely unavailable by sending a small amount of HTTP/2 frames packets with a few HTTP/2 frames inside. It is possible to leave some data in nghttp2 memory after reset when headers with HTTP/2 CONTINUATION frame are sent to the server and then a TCP connection is abruptly closed by the client triggering the Http2Session destructor while header frames are still being processed (and stored in memory) causing a race condition.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References

LinkTags
http://www.openwall.com/lists/oss-security/2024/04/03/16
https://hackerone.com/reports/2319584
https://lists.fedoraproject.org/archives/list/[email protected]/message/JDECX4BYZLMM4S4LALN4DPZ2H
https://lists.fedoraproject.org/archives/list/[email protected]/message/YDVFUH7ACZPYB3BS4SVILNOY7
https://security.netapp.com/advisory/ntap-20240510-0002/
http://www.openwall.com/lists/oss-security/2024/04/03/16
https://hackerone.com/reports/2319584
https://lists.debian.org/debian-lts-announce/2024/09/msg00029.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/JDECX4BYZLMM4S4LALN4DPZ2H
https://lists.fedoraproject.org/archives/list/[email protected]/message/YDVFUH7ACZPYB3BS4SVILNOY7
https://security.netapp.com/advisory/ntap-20240510-0002/
https://www.kb.cert.org/vuls/id/421644

Track CVE-2024-27983 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.5CVE-2025-39964Linux kernel af_alg race condition allows concurrent socket writesThe Linux kernel's af_alg crypto socket implementation did not prevent two concurrent writes to the same socket, allowing data to be interleaved unpr…KEVEPSS 1.00%analysed7.0CVE-2025-62215Windows Kernel race condition and double free privilege escalationA race condition combined with a double free in the Windows Kernel lets a locally authenticated attacker corrupt kernel memory and elevate privileges…KEVEPSS 6.0%analysed7.5CVE-2023-36884Microsoft Windows Search race condition allows remote code executionCVE-2023-36884 is a race condition (CWE-362) in Microsoft Windows Search that permits remote code execution. It affects a broad set of Windows 10, Wi…KEVEPSS 99%analysed6.4CVE-2021-25395Samsung Android MFC charger driver race condition bypasses signature checkA race condition in the Samsung MFC charger driver, fixed prior to SMR MAY-2021 Release 1, lets a local attacker bypass a signature check. It matters…KEVEPSS 0.37%analysed6.4CVE-2021-25394Samsung Android MFC charger driver use-after-free via race conditionThe MFC charger driver in Samsung Android contains a use-after-free that can be triggered through a race condition. It allows an arbitrary write, but…KEVEPSS 0.40%analysed5.5CVE-2014-0196Linux kernel n_tty_write race condition allows local privilege escalationThe n_tty_write function in the Linux kernel through 3.14.3 mishandles tty driver access in the LECHO & !OPOST case, creating a race condition betwee…KEVEPSS 22%analysed6.4CVE-2021-0920Android kernel AF_UNIX use-after-free race conditionA race condition in unix_scm_to_skb() in af_unix.c of the Android kernel can cause a use-after-free. The flaw is reachable locally and, per the recor…KEVEPSS 0.82%analysed7.0CVE-2022-26904Windows User Profile Service race condition privilege escalationCVE-2022-26904 is a race condition (CWE-362) in the Windows User Profile Service that allows elevation of privilege. It affects a broad range of Wind…KEVEPSS 17%analysed

Source: NIST National Vulnerability Database (record CVE-2024-27983), CISA KEV, FIRST EPSS (scores of 2026-09-24). This page is refreshed as NVD updates the record.