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NVD / CVE Program· CNA huawei

CVE-2026-34855: Out-of-bounds write vulnerability in the kernel module.

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.11% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. Special conditions such as timing or configuration are required.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Out-of-bounds write vulnerability in the kernel module. Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.

MediumCVSS 5.7 · v3.1—No exploit No fix recorded
Published
Apr 13, 2026
Updated
Oct 25, 2026
EPSS
0.1% · 1th percentile

Report tools

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Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · huawei
5.7
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-34855

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
huaweiharmonyos
huaweiemui

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • huawei emui14.0.0
  • huawei emui14.2.0
  • huawei emui15.0.0
  • huawei harmonyos4.0.0
  • huawei harmonyos4.2.0
  • huawei harmonyos4.3.0
  • huawei harmonyos4.3.1
  • huawei harmonyos5.1.0
  • huawei harmonyos6.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (huawei). Independent of NVD's CPE analysis and usually ahead of it.

  • Huawei EMUI

    • 15.0.0, 14.2.0, 14.0.0affected

  • Huawei HarmonyOS

    • 6.0.0, 5.1.0, 4.3.1, 4.3.0, 4.2.0, 4.0.0affected

Same product

huawei: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-34865Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confi
    40Plan
  • CVE-2025-54617Stack-based buffer overflow vulnerability in the dms_fwk module.
    39Monitor
  • CVE-2023-44116Vulnerability of access permissions not being strictly verified in the APPWidget module.Successful exploitation of this vulnerability may ca
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-34849Apr 13, 2026 · UAF vulnerability in the screen management module.
    18Monitor
  • ← EarlierCVE-2026-34854Apr 13, 2026 · UAF vulnerability in the kernel module.
    28Monitor
  • Later →CVE-2026-34857Apr 13, 2026 · UAF vulnerability in the communication module.
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-54121460 days apartStartup control vulnerability in the ability module Impact: Successful exploitation of this vulnerability may cause features to perform abno
    30Monitor
  • CVE-2024-56437461 days apartVulnerability of input parameters not being verified in the widget framework module Impact: Successful exploitation of this vulnerability ma
    30Monitor
  • CVE-2021-22484471 days apartSome Huawei wearables have a vulnerability of not verifying the actual data size when reading data.
    30Monitor
  • CVE-2025-6896490 days apartData verification vulnerability in the HiView module.
    22Monitor
  • CVE-2025-54614251 days apartInput verification vulnerability in the home screen module.
    22Monitor
  • CVE-2024-51514524 days apartVulnerability of pop-up windows belonging to no app in the VPN module Impact: Successful exploitation of this vulnerability may affect serv
    22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records