[NEW] [medium] Red Hat Enterprise Linux (acl): Multiple vulnerabilities allow privilege escalation and file manipulation
A local attacker can exploit multiple vulnerabilities in Red Hat Enterprise Linux to escalate their privileges and manipulate data.
CSIRTS triage
- What
- Multiple vulnerabilities allow a local attacker to escalate their privileges and manipulate data.
- Who is affected
- Local attackers on Red Hat Enterprise Linux systems.
- Urgency
- Remediation is medium urgency as the vulnerabilities are not currently exploited.
- Action
- Apply available patches to mitigate the vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2453
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.
- Low exploitation riskCVE-2026-543690.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
- Low exploitation riskCVE-2026-543700.09% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 0% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-54369 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-54370 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- mediumCVE-2026-54370: acl before version 2.4.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulne…nvd
- highCVE-2026-54369: acl before version 2.4.0 contains a symlink traversal vulnerability in the libacl pathname-bas…nvd
- highCVE-2026-54369: acl < 2.4.0 Symlink Traversal Privilege Escalation via libacl Functionsmsrc
Recent advisories for Red Hat Enterprise
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.
- highCVE-2026-18358: A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daem…nvd · 2026-07-31
- medium[NEW] [medium] Red Hat Enterprise Linux (go-billy): Vulnerability allows Denial of Servicecert-bund · 2026-07-31
- high[NEW] [high] Red Hat Enterprise Linux (sssd, glib, c-ares): Multiple vulnerabilitiescert-bund · 2026-07-31
- medium[NEW] [medium] Red Hat Enterprise Linux (python-pillow): Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-31
- medium[NEW] [medium] Red Hat Enterprise Linux (libsolv, aardvark-dns): Multiple vulnerabilitiescert-bund · 2026-07-31
- medium[NEW] [medium] Red Hat Enterprise Linux (freeipmi): Vulnerability allows denial of servicecert-bund · 2026-07-31
More from CERT-Bund (BSI) Security Advisories
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31