CVE-2023-31272Network attack vector

Unauthenticated memory corruption via unbounded URL copy

Published Oct 11, 2023 · Updated Nov 4, 2025

Stack-based buffer overflow in Yifan YF325 1.0_20221108 allows remote attackers to corrupt memory through a crafted Wireless_WDS request. The httpd do_wds function passes the attacker-controlled URL-path suffix to strcpy without checking its length before copying it into a static stack buffer. The endpoint requires no authentication; Talos does not establish whether successful exploitation only crashes httpd or also enables code execution.

CVSS severity8.8
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Yifan YF325 1.0_20221108 allows remote attackers to corrupt memory through a crafted Wireless_WDS request. The httpd do_wds function passes the attacker-controlled URL-path suffix to strcpy without checking its length before copying it into a static stack buffer. The endpoint requires no authentication; Talos does not establish whether successful exploitation only crashes httpd or also enables code execution.

The record

CVE
CVE-2023-31272
Published
Oct 11, 2023
Updated
Nov 4, 2025
Vendor
Xiamen Yifan Communication Technology Co., Ltd.
Product
YF325 Firmware
Classifications
CWE-787, CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.0_20221108

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Xiamen Yifan Communication Technology Co., Ltd. · YF325 Firmwareversion=1.0_20221108
Xiamen Yifan Communication Technology Co., Ltd. · YF325version=v1.0_20221108

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8Cisco TalosCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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