CVE-2023-34356: Peplink Surf SOHO HW1 · OS Command Injection
Affects Peplink Surf SOHO HW1Source CVE Database V5
Not known to be exploited · CVSS 7.2 High.
Data as of 26 Oct 2026, 14:05 UTC
- 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:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Oct 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- 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.
- Enforce strong authentication mechanisms and regularly rotate credentials to reduce the risk of credential compromise.
- Monitor device logs and network traffic for unusual activity indicative of exploitation attempts.
- Disable or limit the use of the vulnerable data.cgi xfer_dns functionality if possible, or apply configuration changes to reduce attack surface.
- Engage with Peplink support to obtain and apply security patches or firmware updates as soon as they become available.
- Implement multi-factor authentication (MFA) for device management interfaces if supported.
- Conduct regular security audits and vulnerability scans on network devices to detect similar issues proactively.
- 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.