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Public proof of concept

CVE-2023-34356

A public proof of concept exists; no exploitation attested.

  • Published2023-10-11
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2023-10-1116:15CVE publishedNVD

Versions per branch

CISA-ADP · NVD
Peplink surf soho
BranchAffectedFixed in
6.35≥ hw1, ≤ v6.35no fix published
Peplink surf soho firmwareversion to verify
BranchAffectedFixed in
6.3= 6.3.5no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As talos, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Peplink Surf SOHO HW1
    Affected
    • = v6.3.5 (in QEMU)no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-10-11

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2024-09-18
  • CNACVSS 3.17.2known since 2026-10-23
  • NVDCVSS 3.18.8read 2026-10-23
  • CNAweakness (CWE)CWE-78known since 2026-10-23
  • NVDweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score5.1 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2023-10-11
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-p5qp-xrxv-c8wv

Frequently asked questions

What is CVE-2023-34356?

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.

Is CVE-2023-34356 actively exploited?

A proof-of-concept exploit exists for CVE-2023-34356, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-34356?

CVE-2023-34356 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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