CVE-2020-28347

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 73.8%, top 1% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 74%
CISA-KEV: Not listedEPSS: 74%CVSS: 9.8Exploit: NoneExposed: 0

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

tdpServer on TP-Link Archer A7 AC1750 devices before 201029 allows remote attackers to execute arbitrary code via the slave_mac parameter. NOTE: this issue exists because of an incomplete fix for CVE-2020-10882 in which shell quotes are mishandled.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
78(Track*)
EG Risk 78/100SSVC: Track*

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
Severity98% × 45%
Exploitation74% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
99.4%
KEV
Not listed

Published

November 8, 2020

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Jul 10, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic

Exploits_and_Advisories/advisories/Pwn2Own/Tokyo2020/minesweeper.md at master · rdomanski/Exploits_and_Advisories · GitHub

https://github.com/rdomanski/Exploits_and_Advisories/blob/master/advisories/Pwn2Own/Tokyo2020/minesweeper.md
generic

Exploits_and_Advisories/advisories/Pwn2Own/Tokyo2019/lao_bomb.md at master · rdomanski/Exploits_and_Advisories · GitHub

https://github.com/rdomanski/Exploits_and_Advisories/blob/master/advisories/Pwn2Own/Tokyo2019/lao_bomb.md
github_pr

Update TP-Link AC1750 Pwn2Own 2019 module

Fix merged in rapid7/metasploit-framework PR #14365 on 2020-11-26 — awaiting tagged release

https://github.com/rapid7/metasploit-framework/pull/14365
generic🟡 PoC Available

PoC/advisories/Pwn2Own/Tokyo_2020/minesweeper.md at master · pedrib/PoC · GitHub

https://github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2020/minesweeper.md
generic🟡 PoC Available

PoC/advisories/Pwn2Own/Tokyo_2019/lao_bomb/lao_bomb.md at master · pedrib/PoC · GitHub

https://github.com/pedrib/PoC/blob/master/advisories/Pwn2Own/Tokyo_2019/lao_bomb/lao_bomb.md

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 24× 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.

  1. 2026-07-23 01:52 UTCEG score recompute
  2. 2026-07-22 22:38 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
  5. 2026-07-21 15:22 UTCEPSS rescore
  6. 2026-07-20 17:04 UTCEPSS rescore
  7. 2026-07-20 17:04 UTCEPSS rescore
  8. 2026-07-19 14:28 UTCEPSS rescore
  9. 2026-07-19 14:28 UTCEPSS rescore
  10. 2026-07-15 16:55 UTCEPSS rescore
  11. 2026-07-15 16:55 UTCEPSS rescore
  12. 2026-07-15 01:57 UTCEPSS rescore
  13. 2026-07-12 05:44 UTCEPSS rescore
  14. 2026-07-09 19:07 UTCEPSS rescore
  15. 2026-06-30 23:20 UTCEPSS rescore
  16. 2026-06-30 23:20 UTCEPSS rescore
  17. 2026-06-29 14:04 UTCEPSS rescore
  18. 2026-06-27 03:06 UTCEPSS rescore
  19. 2026-06-27 03:06 UTCEPSS rescore
  20. 2026-06-25 13:48 UTCEPSS rescore
  21. 2026-06-24 14:03 UTCEPSS rescore
  22. 2026-06-24 14:03 UTCEPSS rescore
  23. 2026-06-23 21:31 UTCEPSS rescore
  24. 2026-06-23 21:31 UTCEPSS rescore
  25. 2026-06-19 19:24 UTCEPSS rescore
Show 22 more
  1. 2026-06-19 19:23 UTCEPSS rescore
  2. 2026-06-17 17:50 UTCEPSS rescore
  3. 2026-06-16 17:50 UTCEPSS rescore
  4. 2026-06-15 17:46 UTCEPSS rescore
  5. 2026-06-13 22:58 UTCEPSS rescore
  6. 2026-06-12 23:10 UTCEPSS rescore
  7. 2026-06-10 22:16 UTCEPSS rescore
  8. 2026-06-06 13:46 UTCEPSS rescore
  9. 2026-06-06 13:45 UTCEPSS rescore
  10. 2026-06-05 22:45 UTCEPSS rescore
  11. 2026-06-05 22:45 UTCEPSS rescore
  12. 2026-06-05 06:08 UTCEPSS rescore
  13. 2026-06-05 06:08 UTCEPSS rescore
  14. 2026-05-31 22:29 UTCEPSS rescore
  15. 2026-05-31 22:29 UTCEPSS rescore
  16. 2026-05-29 13:42 UTCEPSS rescore
  17. 2026-05-28 13:43 UTCEPSS rescore
  18. 2026-05-28 13:43 UTCEPSS rescore
  19. 2026-05-27 13:39 UTCEPSS rescore
  20. 2026-05-27 13:39 UTCEPSS rescore
  21. 2026-05-23 05:34 UTCEG score recompute
  22. 2026-05-23 05:34 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/linux/misc/tplink_archer_a7_c7_lan_rce✓ verified
    First seen Mar 25, 2020

    TP-Link Archer A7/C7 Unauthenticated LAN Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-28347?
CVE-2020-28347 is a critical vulnerability published on November 8, 2020. tdpServer on TP-Link Archer A7 AC1750 devices before 201029 allows remote attackers to execute arbitrary code via the slave_mac parameter. NOTE: this issue exists because of an incomplete fix for CVE-2020-10882 in which shell quotes are mishandled.
When was CVE-2020-28347 disclosed?
CVE-2020-28347 was first published in the National Vulnerability Database on November 8, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-28347 actively exploited?
CVE-2020-28347 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-28347?
CVE-2020-28347 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-28347?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28347, 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.

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