SEPTEMBER 18, 2026
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Case File

CVE-2026-78002

HIGH · CVSS 7.5 EPSS 0.61% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-27 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

A heap buffer overflow vulnerability in the RainerScript `replace()` function of rsyslog allows unauthenticated remote attackers to exploit the flaw by sending specially crafted syslog messages, leading to memory corruption. This can result in a denial of service (DoS) for the affected systems. Organizations using rsyslog should prioritize patching this vulnerability to mitigate potential disruptions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-78002
Severity
HIGH
CVSS
7.5
EPSS
0.61%

Original NVD Description

A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation during string replacement, causing memory corruption. Successful exploitation can lead to a denial of service (DoS) for the affected system.