# CVE-2026-5549: Tenda AC10 RSA 2048-bit Private Key privkeySrv.pem hard-coded key

> Attackers can exploit a hard-coded RSA private key in Tenda AC10 routers to bypass security controls and potentially access sensitive data.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Apr 2026
- **Updated:** 6 Apr 2026
- **Also known as:** GHSA-7v8w-cr25-ggqq

## What is CVE-2026-5549?

CVE-2026-5549 is a medium-severity vulnerability in Tenda Ac10 Firmware, published on 5 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was determined in Tenda AC10 16.03.10.10_multi_TDE01. Affected by this issue is some unknown functionality of the file /webroot_ro/pem/privkeySrv.pem of the component RSA 2048-bit Private Key Handler. Executing a manipulation can lead to use of hard-coded cryptographic key
 . The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

Weakness: CWE-321 (Use of Hard-coded Cryptographic Key), CWE-320

## Which versions are affected by CVE-2026-5549?

It affects 1 product.


Products: Tenda Ac10 Firmware.

## How do I fix CVE-2026-5549?

No fix has been published for CVE-2026-5549 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5549 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5549 exists.

## Other vulnerabilities in Tenda Ac10 Firmware

- [CVE-2018-14558](https://insights.sbomify.com/CVE-2018-14558/): Tenda AC7, AC9, and AC10 Routers Command Injection (critical 9.8, exploited in the wild)
- [CVE-2025-67073](https://insights.sbomify.com/CVE-2025-67073/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45779](https://insights.sbomify.com/CVE-2025-45779/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-25456](https://insights.sbomify.com/CVE-2025-25456/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-25674](https://insights.sbomify.com/CVE-2025-25674/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5549 and fix it if it is affected.

What it is: CVE-2026-5549 is a medium-severity vulnerability in Tenda Ac10 Firmware, published on 5 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5549 exists.

Affected product: Tenda Ac10 Firmware. 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-2026-5549/ (Markdown: https://insights.sbomify.com/CVE-2026-5549/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5549
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5549
- OSV: https://osv.dev/vulnerability/CVE-2026-5549

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5549/
Summaries are generated and may contain mistakes; the official description above is the record.