CVE-2026-6274 · DTS Electronics Redline WR3200 Unauthenticated Admin Access via…

01 · The Real Story

Leaving the front door of a shed unlocked while every advisory screams 'bank vault breach'

CVE-2026-6274 is an authentication bypass in the DTS Electronics Redline WR3200, a budget 802.11n (2.4 GHz, 300 Mbps) home router with 10/100M Ethernet ports — hardware you might find bundled with a Turkish ISP subscription but never in an enterprise rack. Firmware versions 7.1.3 through 7.1.7 expose critical management functions (configuration changes, firmware upload, user management) with no authentication at all. Anyone who can reach the admin interface over HTTP can take full control of the device. The fix is firmware 7.1.8, released by DTS Electronics and coordinated through the Turkish national CERT (USOM) under advisory TR-26-0321. The researcher Deniz BEKTAŞ reported the flaw, and a GitHub PoC repository (bugresearch/CVE-2026-6274) exists.

The vendor CVSS of 9.8 CRITICAL is mechanically correct — the vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H accurately describes an unauth'd, no-interaction, full-impact network bug. But CVSS doesn't encode installed base, deployment role, or blast radius. The Redline WR3200 is a bottom-tier SOHO router sold primarily in Turkey and a handful of export markets. It is not an enterprise edge appliance, identity provider, or any canonical high-value-role component. Its compromise yields control of a single home router — not domain takeover, not fleet compromise, not supply-chain pivot. DTS Electronics / Redline has a documented history of auth-bypass CVEs in this product line (CVE-2023-1833, CVE-2023-1803 — both also 9.8), suggesting a pattern of weak firmware security rather than a novel attack surface. For a security team managing 10,000 enterprise hosts, this CVE is almost certainly irrelevant to the fleet.

"Auth bypass in a Turkish SOHO router with near-zero enterprise footprint. Patch if you have one; most orgs don't."

02 · The Attack Path

3 steps from start to impact.

STEP 01

Identify an exposed Redline WR3200 admin interface

The attacker needs network-layer reachability to the router's HTTP management interface (typically port 80). On most home deployments, this is LAN-only by default. If remote management is enabled or the device is on a flat network, the interface is reachable. Shodan/Censys/FOFA scans for Redline WR3200 HTTP banners would surface exposed instances.

Conditions required:

Network reachability to router management interface (HTTP/80 or HTTPS/443)
Target must be running firmware 7.1.3–7.1.7

Where this breaks in practice:

Management interface is LAN-side by default on most SOHO routers
Redline WR3200 has negligible Shodan footprint — not a mass-deployed device globally
Enterprise environments almost never deploy this model

Detection/coverage: Network asset inventory scan for Redline WR3200 HTTP banners; no mainstream vulnerability scanner (Nessus, Qualys, Rapid7) has a dedicated plugin for this niche device as of September 2026.

STEP 02

Access unprotected management endpoints

The attacker sends unauthenticated HTTP requests to critical management functions. Because CWE-306 (Missing Authentication for Critical Function) is the root cause, protected endpoints respond without checking for a session cookie or credential. The PoC in bugresearch/CVE-2026-6274 likely automates discovery of these unprotected API paths. No exploit tooling beyond curl or a browser is required.

Conditions required:

Step 1 complete — management interface reachable

Where this breaks in practice:

Trivially exploitable if reachable — no friction at this step

Detection/coverage: Web server access logs on the router (if enabled) would show unauthenticated requests to admin endpoints. IDS signatures for Redline management paths are not available in mainstream rulesets.

STEP 03

Full device takeover

With unrestricted access to management functions, the attacker can change DNS settings (for phishing/MitM), modify WiFi credentials, upload malicious firmware, create backdoor accounts, or disable security features. The device could be conscripted into a botnet (Mirai variants routinely target SOHO routers). Impact is scoped to the single device and clients connected to it.

Conditions required:

Step 2 complete — unauthenticated admin access achieved

Where this breaks in practice:

Blast radius is a single SOHO router and its directly connected clients
No lateral movement to enterprise domain, no credential harvest beyond local WiFi PSK
10/100M hardware with 300 Mbps WiFi caps limits utility as a traffic-interception platform

Detection/coverage: Firmware integrity checks (if the router supports them); monitoring for DNS setting changes at the network level; anomalous outbound traffic from router IP to C2 infrastructure.

03 · Compensating Control

LOW 3.5→LOW 2.5

Disable remote management on all Redline WR3200 units — If any WR3200 units exist in your environment, ensure the HTTP/HTTPS management interface is restricted to LAN-only access (the default). This breaks the network-reachable attack vector from the WAN side. As a LOW-severity finding, there is no noisgate mitigation SLA — treat as backlog hygiene and apply during the next maintenance window.

LOW 3.5→LOW 2.0

Place router management interface behind a VLAN or ACL — If the router's management port must remain accessible, restrict it to a dedicated management VLAN reachable only from jump hosts. This prevents lateral attackers or LAN clients from reaching the admin interface. Reduces the reachable population to authorized administrators only.

LOW 3.5→IGNORE 0.0

SEVERITY REDUCED

Update firmware to 7.1.8 or replace the device — The definitive fix is firmware 7.1.8. Given the vendor's pattern of three critical auth bypasses in three years, strongly consider replacing the WR3200 with enterprise-grade equipment (or any vendor with a credible security development lifecycle). No noisgate mitigation SLA applies at LOW — remediation is backlog hygiene with no hard deadline, but the firmware update is trivial if the device exists in your fleet.

What doesn't work

WAF or IPS in front of the router — the router IS the network edge; you cannot place a protective device in front of the device that is itself the outermost hop. Any inline protection would require replacing the router entirely.
Changing the default admin password — this CVE is about *missing* authentication, not weak credentials. The vulnerable endpoints do not check for any credential at all, so a strong password does not help.
Disabling UPnP or WPS — these are unrelated attack surfaces. The auth bypass targets the HTTP management interface's critical function endpoints, not UPnP or WPS protocols.

04 · Intelligence Metadata

The supporting signals.

In-the-Wild Exploitation	None observed. CISA SSVC assessment explicitly states Exploitation: None. Not listed in CISA KEV catalog. No GreyNoise tags or Shadowserver scanning campaigns identified for this device.
Proof-of-Concept	Public PoC exists. GitHub repository `bugresearch/CVE-2026-6274` referenced in multiple aggregator databases (pocindex, CyberStrike, CIRCL). Exploit complexity is trivial — unauthenticated HTTP requests only.
EPSS	0.642% probability of exploitation in next 30 days, ~37–38th percentile. Well below the action threshold most teams use (>10th percentile is bottom-third; this is low even by that bar).
KEV Status	Not listed. No CISA Known Exploited Vulnerabilities entry as of 2026-09-30.
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` — 9.8 CRITICAL. Mechanically maxed on accessibility (network, no auth, no interaction) and impact (full CIA). Scope is Unchanged, meaning impact stays within the vulnerable component (the router itself).
Affected Versions	Redline WR3200 firmware 7.1.3 through 7.1.7. Fixed in 7.1.8. No distro backports — this is a proprietary firmware image.
Installed Base & Exposure	DTS Electronics / Redline is a Turkish electronics vendor (satellite receivers, IPTV, SOHO networking). The WR3200 is a budget 802.11n router with 10/100M ports. Presence in 60+ countries but negligible enterprise adoption. No meaningful Shodan/Censys/FOFA footprint found. No GreyNoise mass-scanning activity observed.
Vendor History	DTS Electronics has prior auth-bypass CVEs in the same product line: CVE-2023-1833 and CVE-2023-1803 (both CVSS 9.8, both auth bypass, disclosed April 2023). This is the third critical auth bypass in ~3 years — a pattern of weak firmware security practices.
Disclosure & Advisory	Disclosed 2026-06-05 via Turkish National CERT (USOM) advisory TR-26-0321 at siberguvenlik.gov.tr. Last NVD update 2026-07-23 (status: deferred).
Researcher	Deniz BEKTAŞ — credited as the vulnerability discoverer in the USOM advisory.

Sources.

05 · The Call

Final Verdict

↓ DOWNGRADED to LOW (3.5/10)

Why this verdict

Near-zero enterprise installed base: The Redline WR3200 is a budget 802.11n SOHO router (2.4 GHz, 300 Mbps, 10/100M ports) sold by a Turkish electronics vendor primarily to consumers and small offices. No enterprise procurement team is deploying this hardware. For a 10,000-host enterprise, the probability of having even one unit in inventory is negligible.
Single-device blast radius with no amplification path: Compromising one WR3200 gives the attacker control of a single SOHO router. There is no path to domain takeover, fleet compromise, mass data egress, or supply-chain pivot. The maximum downstream impact is DNS hijacking or traffic interception for the handful of clients on that router's LAN — a localized incident, not a fleet-scale event.
Role multiplier: (a) *Low-value role (home/micro-office router):* ≥95% of the installed base. Chain succeeds trivially; blast radius is one device + its LAN clients. (b) *Typical role (small-business edge):* ~4% of installs. Chain succeeds; blast radius is still a single site's traffic. (c) *High-value role (enterprise perimeter edge):* <0.1% of the installed base — this 802.11n/100M device is architecturally incapable of serving as an enterprise edge appliance. The high-value-role floor does NOT engage because <1% of the installed base occupies any high-value role, and the component is not canonically a high-value-role product (it is not comparable to FortiGate, PAN-OS, ASA, or pfSense).
No exploitation pressure: Zero in-the-wild exploitation per CISA SSVC. Not KEV-listed. EPSS at 0.642% (37th percentile) is bottom-third. No GreyNoise scanning campaigns. A public PoC exists but has not translated into observed attacks.
Friction compounds at step 1: The management interface is LAN-side by default. An attacker needs either local network presence or the (uncommon) remote-management feature enabled. This pre-filters the reachable population to a small subset of an already-tiny installed base.

Why not higher?

A MEDIUM verdict would imply this deserves scheduled remediation within a year across the enterprise fleet. That overstates the relevance of a niche Turkish SOHO router to virtually any enterprise environment. The blast radius is capped at a single consumer-grade device with no identity, fleet, or supply-chain amplification. The high-value-role floor does not engage because <0.1% of the installed base serves any enterprise function.

Why not lower?

An IGNORE verdict would mean documenting rationale and moving on entirely. The public PoC and trivial exploitability (zero auth, HTTP-only) mean that any organization that *does* have this router should take notice. The vendor's repeat pattern of auth-bypass CVEs (three in three years) suggests firmware quality is chronically poor and future exploitation of SOHO router botnets could eventually sweep this model in. LOW keeps it on the radar as backlog hygiene.

06 · Verification

Crowdsourced verification payload.

Run this script from any host on the same LAN as the Redline WR3200 (or from a host with management-interface reachability). Invoke as: bash check_cve_2026_6274.sh 192.168.1.1 where the argument is the router's IP. Requires curl and no special privileges.

noisgate-verify.sh

BASHREAD-ONLYSAFE

#!/usr/bin/env bash
# check_cve_2026_6274.sh — CVE-2026-6274 Redline WR3200 Auth Bypass Checker
# Usage: bash check_cve_2026_6274.sh <ROUTER_IP>
# Exit codes: 1=VULNERABLE, 0=PATCHED, 2=UNKNOWN

set -euo pipefail

ROUTER_IP="${1:-}"
if [[ -z "$ROUTER_IP" ]]; then
  echo "Usage: $0 <ROUTER_IP>"
  exit 2
fi

TIMEOUT=10
BASE_URL="http://${ROUTER_IP}"

# Step 1: Check if host is reachable and looks like a Redline WR3200
echo "[*] Probing ${BASE_URL} ..."
BANNER=$(curl -s -o /dev/null -w '%{http_code}' --connect-timeout "$TIMEOUT" "${BASE_URL}/" 2>/dev/null || true)
if [[ "$BANNER" != "200" && "$BANNER" != "301" && "$BANNER" != "302" ]]; then
  echo "[!] Could not reach ${BASE_URL} (HTTP status: ${BANNER:-none})"
  echo "UNKNOWN"
  exit 2
fi

# Step 2: Try to pull firmware version from status/device-info page without auth
# Common Redline endpoints for device info (adjust if your firmware uses different paths)
for ENDPOINT in "/cgi-bin/luci/admin/status" "/goform/getSysStatusInfo" "/status.asp" "/cgi-bin/info" "/api/system/info"; do
  RESP=$(curl -s --connect-timeout "$TIMEOUT" -m "$TIMEOUT" "${BASE_URL}${ENDPOINT}" 2>/dev/null || true)
  if [[ -n "$RESP" ]]; then
    # Look for firmware version string
    FW_VER=$(echo "$RESP" | grep -oiE '7\.1\.[0-9]+' | head -1 || true)
    if [[ -n "$FW_VER" ]]; then
      echo "[*] Detected firmware version: ${FW_VER}"
      MINOR=$(echo "$FW_VER" | awk -F. '{print $3}')
      if [[ "$MINOR" -ge 3 && "$MINOR" -lt 8 ]]; then
        echo "[!] Firmware ${FW_VER} is in the vulnerable range (7.1.3 – 7.1.7)"
        echo "VULNERABLE"
        exit 1
      elif [[ "$MINOR" -ge 8 ]]; then
        echo "[+] Firmware ${FW_VER} is patched (>= 7.1.8)"
        echo "PATCHED"
        exit 0
      fi
    fi
    # Also check if we got admin content without auth (CWE-306 indicator)
    if echo "$RESP" | grep -qiE '(firmware|password|wifi_key|ssid|wan_ip|admin)'; then
      echo "[!] Received admin-level content from ${ENDPOINT} WITHOUT authentication"
      echo "[!] This confirms missing-authentication behavior (CWE-306)"
      echo "VULNERABLE"
      exit 1
    fi
  fi
done

echo "[?] Could not determine firmware version or auth-bypass status."
echo "[?] Manually verify firmware version via the router's admin UI."
echo "UNKNOWN"
exit 2