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VulnerabilityPublished Updated

CVE-2023-34356: Peplink Surf SOHO HW1 · OS Command Injection

Affects Peplink Surf SOHO HW1Source CVE Database V5

0

Not known to be exploited · CVSS 7.2 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
5.1% chance of exploitation in 30 days – higher than 92% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/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 26 Oct 2026.

What to do

AI-suggested

  1. Immediately restrict access to the management interface of Peplink Surf SOHO HW1 devices to trusted networks and users only, using network segmentation and firewall rules.
  2. Enforce strong authentication mechanisms and regularly rotate credentials to reduce the risk of credential compromise.
  3. Monitor device logs and network traffic for unusual activity indicative of exploitation attempts.
  4. Disable or limit the use of the vulnerable data.cgi xfer_dns functionality if possible, or apply configuration changes to reduce attack surface.
  5. Engage with Peplink support to obtain and apply security patches or firmware updates as soon as they become available.
  6. Implement multi-factor authentication (MFA) for device management interfaces if supported.
  7. Conduct regular security audits and vulnerability scans on network devices to detect similar issues proactively.
  8. Educate users and administrators about phishing and credential security to prevent unauthorized access.

Description

An OS command injection vulnerability exists in the data.cgi xfer_dns functionality of peplink Surf SOHO HW1 v6.3.5 (in QEMU). A specially crafted HTTP request can lead to command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

References

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