# CVE-2019-25653: Navicat for Oracle 12.1.15 Password Field Denial of Service

> Local attackers can crash Navicat for Oracle by entering an excessively long string in the password field during connection configuration.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Mar 2026
- **Updated:** 30 Mar 2026
- **Also known as:** GHSA-83jv-37p5-gc2r

## What is CVE-2019-25653?

CVE-2019-25653 is a medium-severity denial of service vulnerability in Navicat for Oracle, published on 30 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Navicat for Oracle 12.1.15 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the password field. Attackers can paste a buffer of 550 repeated characters into the password parameter during Oracle connection configuration to trigger an application crash.

Weakness: CWE-620 (Unverified Password Change)

## Which versions are affected by CVE-2019-25653?

It affects 1 product.


Products: Navicat Navicat for Oracle.

## How do I fix CVE-2019-25653?

No fix has been published for CVE-2019-25653 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25653 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25653 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25653 and fix it if it is affected.

What it is: CVE-2019-25653 is a medium-severity denial of service vulnerability in Navicat for Oracle, published on 30 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25653 exists.

Affected product: Navicat for Oracle. 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-2019-25653/ (Markdown: https://insights.sbomify.com/CVE-2019-25653/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25653
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25653
- OSV: https://osv.dev/vulnerability/CVE-2019-25653

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-25653/
Summaries are generated and may contain mistakes; the official description above is the record.