CVE-2023-28381: 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, 17:16 UTC
- EPSS
- 6.0% chance of exploitation in 30 days – higher than 93% 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 administrative access to the Peplink Surf SOHO HW1 devices by limiting management interfaces to trusted IP addresses and enforcing strong authentication mechanisms such as multi-factor authentication.
- Monitor network traffic and device logs for unusual or unauthorized administrative requests, particularly those targeting the admin.cgi endpoint.
- Segregate management interfaces from general network traffic using VLANs or dedicated management networks to reduce exposure.
- Regularly audit and update device credentials to prevent unauthorized access.
- Engage with Peplink support or vendor channels to obtain and apply security patches or firmware updates addressing CVE-2023-28381 as soon as they become available.
- Consider deploying intrusion detection/prevention systems capable of identifying command injection attempts targeting known vulnerable endpoints.
- For environments where patching is delayed, implement compensating controls such as network-level filtering of HTTP requests to the vulnerable functionality and enhanced endpoint security monitoring.
Description
An OS command injection vulnerability exists in the admin.cgi MVPN_trial_init 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.