CVE-2026-40023
A remote, anonymous attacker can exploit multiple vulnerabilities in Apache log4j and Apache Log4cxx to manipulate files.
CSIRTS triage
- What
- Multiple vulnerabilities allow a remote, anonymous attacker to manipulate files.
- Who is affected
- Deployments of Apache log4j and Log4cxx that are vulnerable.
- Urgency
- Remediation is medium urgency due to the potential for file manipulation by anonymous attackers.
- Action
- Apply the latest patches for Apache log4j and Log4cxx.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.
Advisory coverage (1)
- medium[NEW] [medium] Apache log4j and Log4cxx: Multiple vulnerabilities allow file manipulationcert-bund · 2026-07-30
External references
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