Tenda AC19 Stack-Based Buffer Overflow Flaw (CVE-2026-113744) Rated CVSS 10
A newly published critical vulnerability in Tenda AC19 carries a CVSS score of 10. Here is what is affected and how to respond.
Key points
- CVE-2026-113744 affects Tenda AC19.
- CVSS 10 (Critical).
- No exploitation confirmed yet.
Tenda AC19 is affected by CVE-2026-113744, a stack-based buffer overflow that the National Vulnerability Database rates 10 out of 10.
At a glance
- CVE
- CVE-2026-113744
- Product
- Tenda AC19
- CVSS
- 10 Critical
- Weakness
- stack-based buffer overflow
- Exploited
- No known exploitation
What is the vulnerability?
The NVD entry states: A security vulnerability has been detected in Tenda AC19 16.03.10.07. The impacted element is the function formSetFirewallCfg of the file /goform/SetFirewallCfg of the component httpd Web Management Service. Such manipulation of the argument firewallEn leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.
Affected versions
| Vendor | Product | Versions |
|---|---|---|
| Tenda | AC19 | 16.03.10.07 |
Is it being exploited?
There is no public confirmation of exploitation at the time of publication. It does not appear in CISA's Known Exploited Vulnerabilities catalog. We will update this report if that changes.
What should you do?
- Identify whether the affected product and versions run in your environment.
- Apply the vendor update listed in the advisory as soon as it is available.
- Limit network exposure of the affected service until it is patched.
- Monitor the vendor advisory for updated guidance or exploitation reports.
What to do and how to stay safe: CVE-2026-113744
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-113744?
CVE-2026-113744 is a stack-based buffer overflow vulnerability in Tenda AC19.
How severe is CVE-2026-113744?
It has a CVSS score of 10 Critical.
Is CVE-2026-113744 being exploited?
There is no public confirmation of exploitation at the time of publication.
