MEDIUM
CVE-2026-34866
CWE-120Published: April 13, 2026· Updated: Apr 17, 2026
5.1
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.4th
Official Description
Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.
Technical Analysis
CVE-2026-34866 requires local access, meaning attackers must already have a foothold on the target system.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected Vendors & Products
Huawei1 product
harmonyos
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (1)
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Quick Facts
CVE IDCVE-2026-34866
CVSS Score5.1 / 10
SeverityMEDIUM
WeaknessCWE-120
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedApr 13, 2026
Related CVEs (CWE-120)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-34866 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.