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PatchSiren cyber security CVE debrief

CVE-2026-27781 OpenHarmony CVE debrief

A local denial-of-service vulnerability exists in OpenHarmony v6.0 and prior versions. The issue, classified as CWE-190 (Integer Overflow or Wraparound), allows a local attacker to cause a denial-of-service condition. The vulnerability has a CVSS 3.1 score of 3.3 (Low severity) with an attack vector requiring local access, low attack complexity, and low privileges. No user interaction is required. The NVD entry status is currently 'Deferred'. The OpenHarmony project has disclosed this issue through their security disclosure repository.

Vendor
OpenHarmony
Product
Unknown
CVSS
LOW 3.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-19
Original CVE updated
2026-07-24
Advisory published
2026-05-19
Advisory updated
2026-07-24

Who should care

Organizations deploying OpenHarmony-based systems, IoT device manufacturers using OpenHarmony, and security teams managing embedded Linux environments

Technical summary

Integer overflow vulnerability in OpenHarmony v6.0 and prior allows local attackers to cause denial-of-service. Attack requires local access with low privileges. No confidentiality or integrity impact; availability impact is low.

Defensive priority

low

Recommended defensive actions

  • Apply security updates from OpenHarmony when available per vendor security disclosure
  • Review local access controls to limit exposure to trusted users only
  • Monitor OpenHarmony security disclosure repository for patch availability
  • Assess systems running OpenHarmony v6.0 or earlier for exposure

Evidence notes

Vulnerability disclosed by OpenHarmony security team via Gitcode repository. NVD status is 'Deferred'. CVSS vector confirms local attack vector with availability impact only.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-27781 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-27781

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

  • CVE-2026-27781 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-27781

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

Supplemental references

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.