# CVE-2025-8979: Tenda AC15 Firmware Update check_fw data authenticity

> Attackers can bypass firmware signature checks to install malicious firmware on Tenda AC15 routers, potentially gaining full control.

- **Severity:** High 7.5 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Aug 2025
- **Updated:** 14 Aug 2025
- **Also known as:** GHSA-g24v-3qp6-qwr4

## What is CVE-2025-8979?

CVE-2025-8979 is a high-severity vulnerability in Tenda Ac15 Firmware, published on 14 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was identified in Tenda AC15 15.13.07.13. Affected by this vulnerability is the function check_fw_type/split_fireware/check_fw of the component Firmware Update Handler. The manipulation leads to insufficient verification of data authenticity. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2025-8979?

It affects 1 product.


Products: Tenda Ac15 Firmware.

## How do I fix CVE-2025-8979?

No fix has been published for CVE-2025-8979 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-8979 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8979 exists.

## Other vulnerabilities in Tenda Ac15 Firmware

- [CVE-2020-10987](https://insights.sbomify.com/CVE-2020-10987/): Tenda AC1900 Router AC15 Model Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2026-24103](https://insights.sbomify.com/CVE-2026-24103/): Memory corruption in n/a (critical 9.8)
- [CVE-2026-24101](https://insights.sbomify.com/CVE-2026-24101/): Command injection in n/a (critical 9.8)
- [CVE-2026-24105](https://insights.sbomify.com/CVE-2026-24105/): Command injection in n/a (critical 9.8)
- [CVE-2025-63666](https://insights.sbomify.com/CVE-2025-63666/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-8979 and fix it if it is affected.

What it is: CVE-2025-8979 is a high-severity vulnerability in Tenda Ac15 Firmware, published on 14 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8979 exists.

Affected product: Tenda Ac15 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-2025-8979/ (Markdown: https://insights.sbomify.com/CVE-2025-8979/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-8979
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8979
- OSV: https://osv.dev/vulnerability/CVE-2025-8979

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-8979/
Summaries are generated and may contain mistakes; the official description above is the record.