CVE-2023-33538

CRITICALNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-06-16), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 42%CVSS: 8.8Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm .

CVSS v3
8.8
EG Score
9.0(high)
EG Risk
96(Act)
EG Risk 96/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
42%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

June 7, 2023

Last Modified

October 27, 2025

Advisory Details (4)

Auto-updated Jun 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
generic

TP-Link End of Life Products

https://www.tp-link.com/us/support/faq/3562/
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-33538
generic

iotvul/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md at main · a101e-IoTvul/iotvul · GitHub

https://web.archive.org/web/20230609111043/https://github.com/a101e-IoTvul/iotvul/blob/main/tp-link/3/TL-WR940N_TL-WR841N_userRpm_WlanNetworkRpm_Command_Injection.md
generic🔴 Active Exploitation

CISA Issues Warning on Active Exploitation of TP-Link Vulnerability CV | SecPod

https://www.secpod.com/blog/cisa-issues-warning-on-active-exploitation-of-tp-link-vulnerability-cve-2023-33538/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 38× in last 7d / 210× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 423 total refreshes for this CVE.

  1. 2026-07-27 02:53 UTCGHSA enrichment
  2. 2026-07-26 22:45 UTCGHSA enrichment
  3. 2026-07-26 18:36 UTCEG score recompute
  4. 2026-07-26 18:36 UTCGHSA enrichment
  5. 2026-07-26 14:52 UTCEPSS rescore
  6. 2026-07-26 14:27 UTCEG score recompute
  7. 2026-07-26 14:27 UTCGHSA enrichment
  8. 2026-07-26 10:18 UTCGHSA enrichment
  9. 2026-07-26 06:08 UTCGHSA enrichment
  10. 2026-07-26 01:57 UTCEG score recompute
  11. 2026-07-26 01:56 UTCGHSA enrichment
  12. 2026-07-25 14:16 UTCEPSS rescore
  13. 2026-07-24 14:16 UTCEPSS rescore
  14. 2026-07-23 14:16 UTCEPSS rescore
  15. 2026-07-23 14:16 UTCEPSS rescore
  16. 2026-07-23 02:23 UTCEG score recompute
  17. 2026-07-22 23:10 UTCEG score recompute
  18. 2026-07-22 20:29 UTCGHSA enrichment
  19. 2026-07-22 19:40 UTCCISA KEV update
  20. 2026-07-22 16:20 UTCEG score recompute
  21. 2026-07-22 16:20 UTCGHSA enrichment
  22. 2026-07-22 14:06 UTCEPSS rescore
  23. 2026-07-22 12:10 UTCGHSA enrichment
  24. 2026-07-22 08:02 UTCGHSA enrichment
  25. 2026-07-22 03:54 UTCGHSA enrichment
Show 75 more
  1. 2026-07-21 23:43 UTCGHSA enrichment
  2. 2026-07-21 19:16 UTCGHSA enrichment
  3. 2026-07-21 15:07 UTCGHSA enrichment
  4. 2026-07-21 14:37 UTCCISA KEV update
  5. 2026-07-21 10:58 UTCGHSA enrichment
  6. 2026-07-21 06:49 UTCGHSA enrichment
  7. 2026-07-21 02:40 UTCGHSA enrichment
  8. 2026-07-20 22:32 UTCGHSA enrichment
  9. 2026-07-20 18:23 UTCEG score recompute
  10. 2026-07-20 18:23 UTCGHSA enrichment
  11. 2026-07-20 17:06 UTCEPSS rescore
  12. 2026-07-20 14:14 UTCGHSA enrichment
  13. 2026-07-20 10:05 UTCGHSA enrichment
  14. 2026-07-20 05:56 UTCGHSA enrichment
  15. 2026-07-20 01:48 UTCGHSA enrichment
  16. 2026-07-19 21:39 UTCGHSA enrichment
  17. 2026-07-19 17:31 UTCGHSA enrichment
  18. 2026-07-19 13:23 UTCGHSA enrichment
  19. 2026-07-19 09:15 UTCGHSA enrichment
  20. 2026-07-19 05:07 UTCEG score recompute
  21. 2026-07-19 05:07 UTCGHSA enrichment
  22. 2026-07-19 02:27 UTCEPSS rescore
  23. 2026-07-19 02:27 UTCEPSS rescore
  24. 2026-07-19 00:59 UTCGHSA enrichment
  25. 2026-07-18 20:50 UTCGHSA enrichment
  26. 2026-07-18 16:40 UTCGHSA enrichment
  27. 2026-07-18 12:32 UTCEG score recompute
  28. 2026-07-18 12:32 UTCGHSA enrichment
  29. 2026-07-18 10:03 UTCEPSS rescore
  30. 2026-07-18 10:03 UTCEPSS rescore
  31. 2026-07-18 08:23 UTCGHSA enrichment
  32. 2026-07-18 04:14 UTCGHSA enrichment
  33. 2026-07-18 00:06 UTCGHSA enrichment
  34. 2026-07-17 19:57 UTCGHSA enrichment
  35. 2026-07-17 15:49 UTCGHSA enrichment
  36. 2026-07-17 11:40 UTCGHSA enrichment
  37. 2026-07-17 07:31 UTCEG score recompute
  38. 2026-07-17 07:31 UTCGHSA enrichment
  39. 2026-07-17 03:23 UTCGHSA enrichment
  40. 2026-07-16 23:14 UTCGHSA enrichment
  41. 2026-07-16 19:05 UTCGHSA enrichment
  42. 2026-07-16 17:04 UTCCISA KEV update
  43. 2026-07-16 17:01 UTCEPSS rescore
  44. 2026-07-16 14:57 UTCGHSA enrichment
  45. 2026-07-16 10:48 UTCGHSA enrichment
  46. 2026-07-16 06:38 UTCGHSA enrichment
  47. 2026-07-16 02:29 UTCGHSA enrichment
  48. 2026-07-15 22:21 UTCGHSA enrichment
  49. 2026-07-15 18:13 UTCGHSA enrichment
  50. 2026-07-15 16:56 UTCEPSS rescore
  51. 2026-07-15 16:56 UTCEPSS rescore
  52. 2026-07-15 16:49 UTCCISA KEV update
  53. 2026-07-15 15:04 UTCCISA KEV update
  54. 2026-07-15 14:04 UTCGHSA enrichment
  55. 2026-07-15 09:56 UTCGHSA enrichment
  56. 2026-07-15 05:48 UTCGHSA enrichment
  57. 2026-07-15 01:58 UTCEPSS rescore
  58. 2026-07-15 01:58 UTCEPSS rescore
  59. 2026-07-15 01:38 UTCGHSA enrichment
  60. 2026-07-14 21:29 UTCGHSA enrichment
  61. 2026-07-14 18:05 UTCCISA KEV update
  62. 2026-07-14 17:21 UTCGHSA enrichment
  63. 2026-07-14 13:13 UTCGHSA enrichment
  64. 2026-07-14 09:04 UTCGHSA enrichment
  65. 2026-07-14 04:56 UTCGHSA enrichment
  66. 2026-07-14 00:48 UTCGHSA enrichment
  67. 2026-07-13 22:28 UTCEPSS rescore
  68. 2026-07-13 22:28 UTCEPSS rescore
  69. 2026-07-13 20:39 UTCGHSA enrichment
  70. 2026-07-13 17:07 UTCCISA KEV update
  71. 2026-07-13 16:29 UTCGHSA enrichment
  72. 2026-07-13 12:19 UTCGHSA enrichment
  73. 2026-07-13 08:11 UTCGHSA enrichment
  74. 2026-07-13 06:11 UTCEPSS rescore
  75. 2026-07-13 06:11 UTCEPSS rescore

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Frequently asked(6)

What is CVE-2023-33538?
CVE-2023-33538 is a critical vulnerability published on June 7, 2023. TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm .
When was CVE-2023-33538 disclosed?
CVE-2023-33538 was first published in the National Vulnerability Database on June 7, 2023, with the most recent update on October 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-33538 actively exploited?
Yes. CISA added CVE-2023-33538 to the Known Exploited Vulnerabilities catalog on June 16, 2025, affecting TP-Link Multiple Routers. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-33538?
CVE-2023-33538 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-33538?
CVE-2023-33538 affects TP-Link Multiple Routers. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-33538?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-33538, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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