# CVE-2025-13191: D-Link DIR-816L soap.cgi soapcgi_main stack-based overflow

> Remote attackers can execute arbitrary code via a stack-based buffer overflow in the soap.cgi component of unsupported D-Link DIR-816L routers.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Nov 2025
- **Updated:** 17 Nov 2025
- **Also known as:** GHSA-fj3w-7rxg-jxhm

## What is CVE-2025-13191?

CVE-2025-13191 is a high-severity memory corruption vulnerability in D-Link DIR-816L, published on 15 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was determined in D-Link DIR-816L 2_06_b09_beta. This issue affects the function soapcgi_main of the file /soap.cgi. This manipulation causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-121 (Stack-based Buffer Overflow), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-13191?

It affects 1 product.


Products: Dlink Dir-816l Firmware.

## How do I fix CVE-2025-13191?

No fix has been published for CVE-2025-13191 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13191 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13191 exists.

## Other vulnerabilities in D-Link DIR-816L

- [CVE-2022-28956](https://insights.sbomify.com/CVE-2022-28956/): Auth bypass in n/a (critical 9.8)
- [CVE-2020-15893](https://insights.sbomify.com/CVE-2020-15893/): Command injection in n/a (critical 9.8)
- [CVE-2025-13188](https://insights.sbomify.com/CVE-2025-13188/): D-Link DIR-816L authentication.cgi authenticationcgi_main stack-based overflow (critical 9.3)
- [CVE-2025-13189](https://insights.sbomify.com/CVE-2025-13189/): D-Link DIR-816L gena.cgi genacgi_main stack-based overflow (high 8.7)
- [CVE-2025-13190](https://insights.sbomify.com/CVE-2025-13190/): D-Link DIR-816L __ajax_exporer.sgi scandir_main stack-based overflow (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13191 and fix it if it is affected.

What it is: CVE-2025-13191 is a high-severity memory corruption vulnerability in D-Link DIR-816L, published on 15 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13191 exists.

Affected product: D-Link DIR-816L. 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-2025-13191/ (Markdown: https://insights.sbomify.com/CVE-2025-13191/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13191
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13191
- OSV: https://osv.dev/vulnerability/CVE-2025-13191

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-13191/
Summaries are generated and may contain mistakes; the official description above is the record.