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CVE-2026-77827 Maono CVE debrief

CVE-2026-77827 is a high-severity local privilege escalation vulnerability in Maono Link 3.8.13 MaonoAiServices Windows service. The vulnerability allows a standard user account to escalate privileges due to improper write privileges in 'C:ProgramDataMaono'. The issue was fixed in version 4.0.80. This vulnerability has a CVSS score of 8.4, indicating a high severity level. Defenders and system administrators responsible for managing and securing Maono Link installations should assess exposure and apply the patch. The CVE record and NVD entry provide details on the vulnerability. The debrief is based on the supplied source corpus and aims to provide an executive overview of the CVE-

Vendor
Maono
Product
Maono Link
CVSS
HIGH 8.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-14
Advisory published
2026-09-08
Advisory updated
2026-09-14

Who should care

Defenders and system administrators responsible for managing and securing Maono Link installations should assess exposure and apply the patch.

Why it matters

CVE-2026-77827 is a high-severity local privilege escalation vulnerability in Maono Link 3.8.13 MaonoAiServices Windows service. Defenders should prioritize verifying and applying the patch to prevent potential local privilege escalation attacks. System administrators responsible for managing and securing Maono Link installations should assess exposure and apply the patch.

  • Verify and apply patches to prevent potential local privilege escalation attacks.
  • Review system configurations to ensure only necessary services have elevated privileges.
  • Monitor system logs for potential exploitation attempts.

Technical summary

The Maono Link 3.8.13 MaonoAiServices Windows service has a high-severity local privilege escalation vulnerability due to improper write privileges in 'C:ProgramDataMaono'. This allows a standard user account to escalate privileges. The issue was fixed in version 4.0.80.

Defensive priority

Defenders should prioritize verifying and applying the patch to prevent potential local privilege escalation attacks.

Recommended defensive actions

  • Verify and apply the patch to Maono Link by updating to version 4.0.80 or later.
  • Review system configurations to ensure only necessary services have elevated privileges.
  • Monitor system logs for potential exploitation attempts.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 8.4 and affected version. The CVE record was published on 2026-09-08T21:18:39.143Z and has not been modified since then. The evidence is based on the official CVE Program record and the NIST NVD detail page. The vulnerability affects Maono Link 3.8.13 and was fixed in version 4.0.80. The evidence notes are based on the supplied source corpus and aim to provide source grounding, evidence

Sources and references

Verified primary and authoritative sources

  • CVE-2026-77827 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-77827

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-77827 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-77827

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-251-01.json

    9119a7d8-5eab-497f-8521-727c672e3725

  • Source reference

    Unverified legacy reference

    URL: https://www.maono.com/products/maono-link-software

    9119a7d8-5eab-497f-8521-727c672e3725

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.