[NEW] [medium] Xen: Vulnerability allows file manipulation
A remote, anonymous attacker can exploit a vulnerability in Xen to manipulate files.
CSIRTS triage
- What
- A vulnerability allows file manipulation.
- Who is affected
- Remote, anonymous attackers can exploit this vulnerability.
- Urgency
- Remediation is medium urgency as exploitation is possible but not currently active.
- Action
- Apply the latest security patches provided by Xen.
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-2026-2359
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-42491 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownVulnerability in Xen XAPI (July 15, 2026)cert-fr-avis
- unknownMultiple Vulnerabilities in Citrix Products (July 15, 2026)cert-fr-avis
Recent advisories for Xen
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.
- high[NEW] [high] Xen: Multiple vulnerabilitiescert-bund · 2026-07-31
- medium[UPDATE] [medium] Xen: Multiple vulnerabilitiescert-bund · 2026-07-31
- high[UPDATE] [high] Xen and Citrix Systems XenServer: Multiple vulnerabilitiescert-bund · 2026-07-30
- unknownXen Multiple Vulnerabilitieshkcert · 2026-07-30
- unknownMultiple Vulnerabilities in Xen (July 29, 2026)cert-fr-avis · 2026-07-29
- mediumCVE-2026-62434: A guest started with Populated on Demand enabled (PoD) can attempt to reclaim pages which aren…nvd · 2026-07-28
More from CERT-Bund (BSI) Security Advisories
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow Denial of Service2026-07-31
- 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 (ntfs3): Vulnerability allows information disclosure2026-07-31