# CVE-2025-64386: HIJACKING OF THE TOKEN AND GAINING ACCESS

> Attackers can hijack active JWT tokens to steal sessions and modify security parameters without detection on Circutor TCPRS1plus devices.

- **Severity:** High 7.7 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Oct 2025
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-4m38-cfr7-jx25

## What is CVE-2025-64386?

CVE-2025-64386 is a high-severity authentication bypass vulnerability in Circutor TCPRS1plus, published on 31 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The
equipment grants a JWT token for each connection in the timeline, but during an
active valid session, a hijacking of the token can be done. This will allow an
attacker with the token modify parameters of security, access or even steal the
session without
the legitimate and active session detecting it. The web server allows the
attacker to reuse an old session JWT token while the legitimate session is
active.

Weakness: CWE-613 (DEPRECATED: Insufficient Session Expiration)

## Which versions are affected by CVE-2025-64386?


## How do I fix CVE-2025-64386?

No fix has been published for CVE-2025-64386 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-64386 being exploited?

There is no known exploitation of CVE-2025-64386 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-64386 and fix it if it is affected.

What it is: CVE-2025-64386 is a high-severity authentication bypass vulnerability in Circutor TCPRS1plus, published on 31 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-64386 in the wild and no public exploit code.

Affected product: Circutor TCPRS1plus. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-64386/ (Markdown: https://insights.sbomify.com/CVE-2025-64386/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-64386
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-64386
- OSV: https://osv.dev/vulnerability/CVE-2025-64386

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-64386/
Summaries are generated and may contain mistakes; the official description above is the record.