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CWE-364

Signal Handler Race Condition

6 CVEs Avg CVSS 5.9 MITRE
0
CRITICAL
2
HIGH
3
MEDIUM
1
LOW
2
POC
0
KEV

Monthly

CVE-2026-42002 MEDIUM PATCH This Month

Concurrency and locking defects in the GSS-TSIG implementation of PowerDNS Authoritative expose the nameserver to a denial-of-service condition exploitable remotely without authentication. The CVSS vector (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) confirms the impact is limited to availability - crashing or destabilizing the authoritative DNS service - under high-complexity race condition circumstances. No active exploitation has been confirmed (not in CISA KEV), and no public exploit code has been identified at time of analysis.

Information Disclosure
NVD VulDB
CVSS 3.1
5.9
EPSS
0.0%
CVE-2026-33565 LOW Monitor

Signal handler race condition in OpenHarmony v6.0 and prior enables a local, low-privileged attacker to cause a denial-of-service condition. The vulnerability (CWE-364) produces only low availability impact per the CVSS vector, with no confidentiality or integrity loss confirmed. No public exploit code or CISA KEV listing exists at time of analysis, placing this in a low-urgency tier despite the low attack complexity.

Information Disclosure
NVD VulDB
CVSS 3.1
3.3
EPSS
0.0%
CVE-2026-27766 MEDIUM This Month

Information disclosure in OpenHarmony v6.0 and earlier enables a low-privileged local attacker to leak high-sensitivity data from the system without any user interaction. The root cause is a signal handler race condition (CWE-364), where asynchronous signal delivery can expose protected memory contents while leaving system integrity and availability unaffected. No public exploit code has been identified at the time of analysis, and the vulnerability is not listed in the CISA KEV catalog.

Information Disclosure
NVD VulDB
CVSS 3.1
5.5
EPSS
0.0%
CVE-2026-24792 HIGH This Week

Remote code execution in OpenHarmony v6.0 and prior versions allows authenticated remote attackers to execute arbitrary code within pre-installed applications through a race condition flaw (CWE-364). The CVSS 8.1 score reflects high confidentiality and availability impact but no integrity impact, and no public exploit has been identified at time of analysis. The vulnerability requires low privileges but no user interaction, making it exploitable across OpenHarmony's distributed device ecosystem including smart devices, wearables, and IoT endpoints running the open-source operating system.

RCE
NVD
CVSS 3.1
8.1
EPSS
0.2%
CVE-2025-4598 MEDIUM POC PATCH This Month

A vulnerability was found in systemd-coredump. Rated medium severity (CVSS 4.7). Public exploit code available and no vendor patch available.

Information Disclosure Linux
NVD
CVSS 3.1
4.7
EPSS
0.1%
CVE-2024-6387 HIGH POC PATCH THREAT Act Now

Remote code execution in OpenSSH's sshd server (regression of CVE-2006-5051) allows unauthenticated remote attackers to exploit a signal handler race condition by failing to authenticate within the LoginGraceTime window, potentially yielding root-level code execution on glibc-based Linux systems. The flaw - widely known as 'regreSSHion' - affects numerous distributions and vendor appliances including Ubuntu 23.10/24.04, AlmaLinux 9, SonicWall SMA firmware, Arista EOS, NetApp ONTAP, and others. Publicly available exploit code exists and EPSS scores it at 48.06% (98th percentile), reflecting very high exploitation likelihood, though it is not currently listed in CISA KEV.

Information Disclosure SSH macOS Active Iq Unified Manager Bootstrap Os +50
NVD GitHub Exploit-DB
CVSS 3.1
8.1
EPSS
48.1%
Threat
4.6
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

Concurrency and locking defects in the GSS-TSIG implementation of PowerDNS Authoritative expose the nameserver to a denial-of-service condition exploitable remotely without authentication. The CVSS vector (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) confirms the impact is limited to availability - crashing or destabilizing the authoritative DNS service - under high-complexity race condition circumstances. No active exploitation has been confirmed (not in CISA KEV), and no public exploit code has been identified at time of analysis.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 3.3
LOW Monitor

Signal handler race condition in OpenHarmony v6.0 and prior enables a local, low-privileged attacker to cause a denial-of-service condition. The vulnerability (CWE-364) produces only low availability impact per the CVSS vector, with no confidentiality or integrity loss confirmed. No public exploit code or CISA KEV listing exists at time of analysis, placing this in a low-urgency tier despite the low attack complexity.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM This Month

Information disclosure in OpenHarmony v6.0 and earlier enables a low-privileged local attacker to leak high-sensitivity data from the system without any user interaction. The root cause is a signal handler race condition (CWE-364), where asynchronous signal delivery can expose protected memory contents while leaving system integrity and availability unaffected. No public exploit code has been identified at the time of analysis, and the vulnerability is not listed in the CISA KEV catalog.

Information Disclosure
NVD VulDB
EPSS 0% CVSS 8.1
HIGH This Week

Remote code execution in OpenHarmony v6.0 and prior versions allows authenticated remote attackers to execute arbitrary code within pre-installed applications through a race condition flaw (CWE-364). The CVSS 8.1 score reflects high confidentiality and availability impact but no integrity impact, and no public exploit has been identified at time of analysis. The vulnerability requires low privileges but no user interaction, making it exploitable across OpenHarmony's distributed device ecosystem including smart devices, wearables, and IoT endpoints running the open-source operating system.

RCE
NVD
EPSS 0% CVSS 4.7
MEDIUM POC PATCH This Month

A vulnerability was found in systemd-coredump. Rated medium severity (CVSS 4.7). Public exploit code available and no vendor patch available.

Information Disclosure Linux
NVD
EPSS 48% 4.6 CVSS 8.1
HIGH POC PATCH THREAT Act Now

Remote code execution in OpenSSH's sshd server (regression of CVE-2006-5051) allows unauthenticated remote attackers to exploit a signal handler race condition by failing to authenticate within the LoginGraceTime window, potentially yielding root-level code execution on glibc-based Linux systems. The flaw - widely known as 'regreSSHion' - affects numerous distributions and vendor appliances including Ubuntu 23.10/24.04, AlmaLinux 9, SonicWall SMA firmware, Arista EOS, NetApp ONTAP, and others. Publicly available exploit code exists and EPSS scores it at 48.06% (98th percentile), reflecting very high exploitation likelihood, though it is not currently listed in CISA KEV.

Information Disclosure SSH macOS +52
NVD GitHub Exploit-DB

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