CVE-2026-42373General(dlink / dir-605l)

LOWCVSS 8.8 · HIGH

Signal is active with 5 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

D-Link DIR-605L Hardware Revision B2 (End-of-Life, EOL) contains a hardcoded telnet backdoor. The device starts a telnet daemon at boot via /bin/telnetd.sh with the username "Alphanetworks" and the static password "wrgn76_dlwbr_dir605L" read from /etc/alpha_config/image_sign. The custom telnetd binary accepts a -u user:password flag, and the custom login binary uses strcmp() to validate credentials. Successful authentication grants an unauthenticated attacker on the local network a root shell with full administrative control. The device has reached End-of-Life (EOL) and will not receive patches.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-798

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • dir-605l
  • dir-605l_firmware

Threat summary

  • 6 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 5 signals
  • General: 3 classified signals
  • Disclosure: 3 classified signals
  • Peaked at 5 mentions on most recent observed day (2026-05-13)
  • 6 total mentions across 2 days

Affected systems

Vendors
Products
dir-605ldir-605l_firmware

1 version affected across 2 products

Deep dive

Activity timeline6 mentions / 2d
01345Mentions · 2026-05-04: 1Mentions · 2026-05-13: 5Technical Details · 2026-05-04: 1Technical Details · 2026-05-13: 405-0405-13
Signal classification2 categories
General
350.0%
Disclosure
350.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-041
General1
2026-05-135
Disclosure3General2
Full discourse6 posts
  • Lyrie.ai@lyrie_ai
    Disclosure

    --- Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation. CVE: CVE-2026-42373 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory

    Post summary

    CVE-2026-42373 has been disclosed with a CVSS‑3.1 score of 9.8 (critical), but no PoC, exploit, active exploitation, or patch details are provided.

    1000029
    210 followersView on X
  • Lyrie.ai@lyrie_ai
    Disclosure

    CRITICAL: CVE-2026-42373 (CVSS 9.8) — multiple products. CVE: CVE-2026-42373 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory

    Post summary

    The post announces CVE-2026-42373 as a critical vulnerability with a CVSS score of 9.8, but it provides no details on exploitation, patches, or mitigation.

    1000032
    210 followersView on X
  • Lyrie.ai@lyrie_ai
    Disclosure

    CVE: CVE-2026-42373 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory D-Link DIR-605L Hardware Revision B2 (End-of-Life, EOL) contains a hardcoded telnet backdoor.

    Post summary

    The advisory highlights a critical CVE with a hardcoded telnet backdoor on a D‑Link router, specifying severity and CVSS details but providing no PoC, tool, or mitigation information.

    1000032
    210 followersView on X
  • Lyrie.ai@lyrie_ai
    General

    References CVE: CVE-2026-42373 CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity: CRITICAL Status: Critical advisory

    Post summary

    The entry lists basic CVE reference data but contains no actionable details on exploitation, patches, or confirmation of active use.

    1000039
    210 followersView on X
  • Lyrie.ai@lyrie_ai
    General

    https://lyrie.ai/research/research/cve-2026-42373-advisory #lyrie #cybersecurity #CVE #threatintel #zerodayattack

    Post summary

    The text references a link to an advisory for CVE-2026-42373 but provides no additional details or indicators of exploitation, patching, or PoC.

    0000022
    210 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-42373 Hardcoded Telnet Backdoor in D-Link DIR-605L Hardware Revision B2 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-42373

    Post summary

    The entry identifies a hardcoded Telnet backdoor in the D-Link DIR-605L hardware revision B2 but offers no exploit code, active‑exploitation notice, or mitigation guidance.

    0000036
    4.0K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
HWdlinkdir-605lb2--
OSdlinkdir-605l_firmware---

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