CVE-2023-37719Public exploitNetwork attack vector

Code execution or crash via unbounded sprintf

Published Jul 14, 2023 · Updated Oct 30, 2024

Stack overflow in Tenda F1202 1.0BR_V1.2.0.20(408) and FH1202 1.2.0.19_EN allows remote attackers to execute code or crash. The fromP2pListFilter handler passes the untrusted page parameter to sprintf without a length check, overflowing a stack buffer. No authentication or user interaction is required; successful exploitation can interrupt routing service or execute code in the web service context.

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 F1202 1.0BR_V1.2.0.20(408) and FH1202 1.2.0.19_EN allows remote attackers to execute code or crash. The fromP2pListFilter handler passes the untrusted page parameter to sprintf without a length check, overflowing a stack buffer. No authentication or user interaction is required; successful exploitation can interrupt routing service or execute code in the web service context.

The record

CVE
CVE-2023-37719
Published
Jul 14, 2023
Updated
Oct 30, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
F1202
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=V1.0BR_V1.2.0.20(408)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · F1202version=V1.0BR_V1.2.0.20(408)
Shenzhen Tenda Technology Co., Ltd. · FH1202version=V1.2.0.19_EN

Published CVSS scores

9.8NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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