# CVE-2025-10773: B-Link BL-AC2100 Web Management set_delshrpath_cfg delshrpath stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the B-Link BL-AC2100 web interface to execute arbitrary code.

- **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:** 22 Sep 2025
- **Updated:** 30 Sep 2025
- **Also known as:** GHSA-xvvh-w6wp-p287

## What is CVE-2025-10773?

CVE-2025-10773 is a high-severity memory corruption vulnerability in B-Link BL-AC2100, published on 22 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security flaw has been discovered in B-Link BL-AC2100 up to 1.0.3. Affected by this issue is the function delshrpath of the file /goform/set_delshrpath_cfg of the component Web Management Interface. The manipulation of the argument Type results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been released to the public and may be exploited. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-121 (Stack-based Buffer Overflow), CWE-787 (Out-of-bounds Write), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-10773?

It affects 1 product.


Products: Lb-Link Bl-Ac2100 Firmware.

## How do I fix CVE-2025-10773?

No fix has been published for CVE-2025-10773 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-10773 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10773 exists.

## Other vulnerabilities in B-Link BL-AC2100

- [CVE-2025-29062](https://insights.sbomify.com/CVE-2025-29062/): Command injection in n/a (critical 9.8)
- [CVE-2025-29063](https://insights.sbomify.com/CVE-2025-29063/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-10773 and fix it if it is affected.

What it is: CVE-2025-10773 is a high-severity memory corruption vulnerability in B-Link BL-AC2100, published on 22 Sep 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-2025-10773 exists.

Affected product: B-Link BL-AC2100. 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-2025-10773/ (Markdown: https://insights.sbomify.com/CVE-2025-10773/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-10773
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-10773
- OSV: https://osv.dev/vulnerability/CVE-2025-10773

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-10773/
Summaries are generated and may contain mistakes; the official description above is the record.