CVE-2011-10035Hinoki check available

Local privilege escalation via crontab TOCTOU race

Published Oct 30, 2025 · Updated Oct 30, 2025

TOCTOU race conditions in Nagios XI before 2011R1.9 allow local users to execute commands with elevated privileges through crontab updates. The privileged crontab installation scripts check filesystem paths before use without synchronization or final-path validation, allowing intervening filesystem changes to redirect elevated file or command handling. A low-privileged local account and successful race timing are required; compromise is confined to the Nagios XI host but grants higher operating-system privileges.

CVSS severity7.3
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

TOCTOU race conditions in Nagios XI before 2011R1.9 allow local users to execute commands with elevated privileges through crontab updates. The privileged crontab installation scripts check filesystem paths before use without synchronization or final-path validation, allowing intervening filesystem changes to redirect elevated file or command handling. A low-privileged local account and successful race timing are required; compromise is confined to the Nagios XI host but grants higher operating-system privileges.

The record

CVE
CVE-2011-10035
Published
Oct 30, 2025
Updated
Oct 30, 2025
Vendor
Nagios Enterprises, LLC
Product
Nagios XI
Classifications
CWE-367, CAPEC-29, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2025Record 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 <2011R1.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Nagios Enterprises, LLC · Nagios XIversion=0 <2011R1.9

Published CVSS scores

7.0NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3VulnCheckCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
CAPEC-29Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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