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CVE-2022-43451· NVD / CVE Program· CNA OpenHarmony

Multiple path traversal in appspawn and nwebspawn services.

OpenHarmony-v3.1.2 and prior versions had an Multiple path traversal vulnerability in appspawn and nwebspawn services. Local attackers can create arbitrary directories or escape application sandbox.If chained with other vulnerabilities it would allow an unprivileged process to gain full root privileges.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Nov 3, 2022
Updated
Jun 17, 2026
EPSS
0.2% · 8th percentile
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Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
6.5
CNA · OpenHarmony
8.4
1.9 point gap

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

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

Affected systems

VendorProduct
openharmonyopenharmony

Affected versions

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

  • openharmony openharmony3.1 and later · up to 3.1.2 inclusive

Versions reported by the vendor

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

  • OpenHarmony OpenHarmony

    • 3.1.0affected

Same product

openharmony: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-27648web_webview has an out-of-bounds write vulnerability
    35Monitor
  • CVE-2022-42463Softbus_server in communication subsystem has a authenication bypass vulnerability in a callback handler function. Attackers can launch attacks on distributed n
    35Monitor
  • CVE-2022-38700multimedia subsystem has a permission bypass vulnerability. LAN attackers can bypass permission control and get control of camera service.
    35Monitor
  • CVE-2026-25781kernel_liteos_a has an out-of-bounds write vulnerability
    33Monitor
  • CVE-2026-24792web_webview has a Race Condition vulnerability
    32Monitor
  • CVE-2022-45126Kernel subsystem in kernel_liteos_a has a kernel stack overflow vulnerability when call SysClockGettime.
    31Monitor

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.

—

Chain candidates

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

  • CVE-2022-4246320 days apartSoftbus_server in communication subsystem has a authenication bypass vulnerability in a callback handler function. Attackers can launch attacks on distributed n
    35Monitor
  • CVE-2022-3870055 days apartmultimedia subsystem has a permission bypass vulnerability. LAN attackers can bypass permission control and get control of camera service.
    35Monitor
  • CVE-2022-4248820 days apartStartup subsystem missed permission validation in param service. An malicious application installed on the device could elevate its privileges to the root user,
    31Monitor
  • CVE-2022-4511835 days apartTelephony in communication subsystem sends public events with personal data, but the permission is not set.
    22Monitor

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.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

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

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

Attack context

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

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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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