CVE-2025-10263
This vulnerability allows an attacker to write to memory or resources that belong to a higher privilege level on a range of Arm processors. It can be triggered over the network without authentication or user interaction, potentially letting a malicious actor modify system data or code.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A76 & A76A.
Real-world impact
An attacker could overwrite protected memory or configuration, potentially taking control of the device or corrupting its operation.
Why this severity
The CVSS score of 9.1 reflects that the flaw is network‑exposed, requires no authentication, and gives the attacker full confidentiality and integrity compromise. The low attack complexity and lack of user interaction make it highly dangerous.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- Jun 9, 2026 · Jun 9, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Aug 3, 2026 · 16h agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- developer.arm.com/documentation/112137
- openwall.com/lists/oss-security/2026/06/…
- xenbits.xen.org/xsa/advisory-493.html
- access.redhat.com/errata/RHSA-2026:34911
- access.redhat.com/errata/RHSA-2026:36018
- access.redhat.com/errata/RHSA-2026:36348
- access.redhat.com/errata/RHSA-2026:36349
- access.redhat.com/errata/RHSA-2026:40764
- access.redhat.com/errata/RHSA-2026:47248
- access.redhat.com/errata/RHSA-2026:49031
- access.redhat.com/errata/RHSA-2026:49033
- access.redhat.com/security/cve/CVE-2025-10263
- bugzilla.redhat.com/show_bug.cgi
- security.access.redhat.com/data/csaf/v2/vex/2025/cve-2…