CVE-2023-37716Public exploitNetwork attack vector

Unauthenticated code execution via unchecked sprintf

Published Jul 14, 2023 · Updated Oct 30, 2024

Stack overflow in Tenda AC5, AC7, AC9, AC10, AC1206, F1202, and FH1202 firmware allows remote attackers to execute code. The fromNatStaticSetting handler passes the untrusted page parameter to sprintf without a length check, overflowing its v6 stack buffer. Unauthenticated requests affect AC5, AC7, AC10, and AC1206 1.0, AC9 3.0, F1202 1.0BR_V1.2.0.20(408), and FH1202 1.2.0.19_EN, causing a crash or arbitrary code execution.

CVSS severity9.8
Critical
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack overflow in Tenda AC5, AC7, AC9, AC10, AC1206, F1202, and FH1202 firmware allows remote attackers to execute code. The fromNatStaticSetting handler passes the untrusted page parameter to sprintf without a length check, overflowing its v6 stack buffer. Unauthenticated requests affect AC5, AC7, AC10, and AC1206 1.0, AC9 3.0, F1202 1.0BR_V1.2.0.20(408), and FH1202 1.2.0.19_EN, causing a crash or arbitrary code execution.

The record

CVE
CVE-2023-37716
Published
Jul 14, 2023
Updated
Oct 30, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC7
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC7version=v1.0
Shenzhen Tenda Technology Co., Ltd. · AC10version=v.1.0
Shenzhen Tenda Technology Co., Ltd. · AC9version=v3.0
Shenzhen Tenda Technology Co., Ltd. · AC1206version=v1.0
Shenzhen Tenda Technology Co., Ltd. · F1202version=V1.0BR_V1.2.0.20(408)
Shenzhen Tenda Technology Co., Ltd. · FH1202version=V1.2.0.19_EN
Shenzhen Tenda Technology Co., Ltd. · AC5version=v1.0

Published CVSS scores

9.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo