CVE-2024-11263Public exploit

Local privilege escalation via unreset global pointer

Published Nov 15, 2024 · Updated Nov 18, 2024

Privilege context-switching error in Zephyr RTOS 3.7 and earlier allows local users to corrupt kernel global-variable accesses. On RISC-V builds with CONFIG_RISCV_GP=y, an untrusted user thread can modify gp, and exception entry fails to restore the constant linker-selected pointer before privileged code uses GP-relative accesses. A carefully selected gp value and system call can redirect a kernel update to another global variable; random values can instead hard-fault the system.

CVSS severity9.3
Critical
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege context-switching error in Zephyr RTOS 3.7 and earlier allows local users to corrupt kernel global-variable accesses. On RISC-V builds with CONFIG_RISCV_GP=y, an untrusted user thread can modify gp, and exception entry fails to restore the constant linker-selected pointer before privileged code uses GP-relative accesses. A carefully selected gp value and system call can redirect a kernel update to another global variable; random values can instead hard-fault the system.

The record

CVE
CVE-2024-11263
Published
Nov 15, 2024
Updated
Nov 18, 2024
Vendor
Zephyr Project
Product
Zephyr RTOS
Classifications
CWE-270, CAPEC-30, CAPEC-17, CAPEC-35, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.7
  2. Affected versionversion=* <=3.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Zephyr Project · Zephyr RTOSversion=0 <=3.7; version=* <=3.7

Published CVSS scores

8.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3Zephyr ProjectCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-270Privilege Context Switching Error
CAPEC-30Hijacking a Privileged Thread of Execution
CAPEC-17Using Malicious Files
CAPEC-35Leverage Executable Code in Non-Executable Files
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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