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CVE-2023-34346VulnerabilityPublished Updated

CVE-2023-34346: Yifan YF325 · Leftover Debug Code

Affects Yifan YF325Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.3% chance of exploitation in 30 days – higher than 71% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Oct 2023

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

AI-suggested

1. Immediate action should focus on obtaining and applying any official firmware updates or patches from Yifan addressing this vulnerability. 2. If patches are unavailable, network administrators should implement strict firewall rules to block inbound traffic targeting the gwcfg.cgi endpoint or restrict access to trusted management networks only. 3. Deploy network intrusion detection/prevention systems (IDS/IPS) with signatures or anomaly detection to identify and block suspicious packets targeting the vulnerable functionality. 4. Conduct asset inventories to identify all Yifan YF325 devices in the environment and isolate or segment them to minimize exposure. 5. Monitor network traffic for unusual activity indicative of exploitation attempts. 6. Engage with Yifan support channels to obtain timelines for patch releases and coordinate vulnerability management. 7. Consider device replacement if timely patches are not forthcoming and the device is critical to operations. 8. Educate security teams on the specific nature of this vulnerability to enhance incident response readiness.

Description

A stack-based buffer overflow vulnerability exists in the httpd gwcfg.cgi get functionality of Yifan YF325 v1.0_20221108. A specially crafted network packet can lead to command execution. An attacker can send a network request to trigger this vulnerability.

References

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