CVE-2026-64879: A filename supplied during file upload is not properly sanitized before being used in system command execution, allowing an attacker to inject shell metacharacters and achieve comm

criticalCVSS 9.9CVE-2026-64879

A filename supplied during file upload is not properly sanitized before being used in system command execution, allowing an attacker to inject shell metacharacters and achieve command injection via the audit file upload functionality.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: critical — CVSS 9.9
Published: 2026-07-21
Last updated: 2026-07-24
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-64879

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Moderate exploitation riskCVE-2026-648792.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 84% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64879	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownMultiple vulnerabilities in Tenable products (August 4, 2026)cert-fr-avis
unknownMultiple vulnerabilities in Tenable Security Center (July 21, 2026)cert-fr-avis

Recent advisories for A filename supplied

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

criticalCVE-2026-52680: Apache Kyuubi REST batch multipart upload handling uses the client-supplied multipart filename…nvd · 2026-07-30
mediumCVE-2026-16743: A flaw was found in accountsservice. The systemd-homed code path for SetIconFile opens a user-…nvd · 2026-07-24
criticalCVE-2026-52891: Wekan is open source kanban built with Meteor. Prior to 9.07, Wekan avatar upload functionalit…nvd · 2026-07-15
highCVE-2026-12511: The AI Engine WordPress plugin before 3.5.5 does not sanitize a user-supplied filename before …nvd · 2026-07-14
criticalCVE-2026-14480: OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy …nvd · 2026-07-10