# CVE-2025-12455: Username Enumeration Observable Response Discrepancy vulnerability has been discovered in OpenText™ Vertica.

> Attackers can enumerate valid usernames via response discrepancies in the Vertica management console, facilitating password brute-force attacks.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/S:N/AU:Y/R:U`)
- **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:** 13 Mar 2026
- **Updated:** 13 Mar 2026
- **Also known as:** GHSA-phcr-v9ch-26r8

## What is CVE-2025-12455?

CVE-2025-12455 is a medium-severity vulnerability in OpenText™ Vertica, published on 13 Mar 2026. 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

Observable response discrepancy vulnerability in OpenText™ Vertica allows Password Brute Forcing.  
The vulnerability could lead to Password Brute Forcing in Vertica management console application.This issue affects Vertica: from 10.0 through 10.X, from 11.0 through 11.X, from 12.0 through 12.X.

Weakness: CWE-204 (Observable Response Discrepancy)

## Which versions are affected by CVE-2025-12455?

It affects 1 product.


Products: Opentext Vertica.

## How do I fix CVE-2025-12455?

No fix has been published for CVE-2025-12455 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-12455 being exploited?

There is no known exploitation of CVE-2025-12455 in the wild and no public exploit code.

## Other vulnerabilities in OpenText™ Vertica

- [CVE-2017-5802](https://insights.sbomify.com/CVE-2017-5802/): Privilege escalation in Vertica Analytics Platform (critical 9.8)
- [CVE-2016-2002](https://insights.sbomify.com/CVE-2016-2002/): Command injection in n/a (critical 9.8)
- [CVE-2015-6867](https://insights.sbomify.com/CVE-2015-6867/): Auth bypass in n/a (high 7.5)
- [CVE-2025-12453](https://insights.sbomify.com/CVE-2025-12453/): Improper neutralization of input during web page generation vulnerability has been discovered in OpenText™ Vertica. (medium 5.1)
- [CVE-2025-12454](https://insights.sbomify.com/CVE-2025-12454/): Improper neutralization of input during web page generation vulnerability has been discovered in OpenText™ Vertica. (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-12455 and fix it if it is affected.

What it is: CVE-2025-12455 is a medium-severity vulnerability in OpenText™ Vertica, published on 13 Mar 2026. 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-2025-12455 in the wild and no public exploit code.

Affected product: OpenText™ Vertica. 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-2025-12455/ (Markdown: https://insights.sbomify.com/CVE-2025-12455/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-12455
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-12455
- OSV: https://osv.dev/vulnerability/CVE-2025-12455

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-12455/
Summaries are generated and may contain mistakes; the official description above is the record.