CVE-2026-15469

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% 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, secondary
Trending — 4 sources updated this weekElevated
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: Elevated riskExposed: 0

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

The use of hard-coded cryptographic key vulnerability has been identified in the mesh functionality of Deco XE75 v3, XE5300 v3.6 and WE10800 v3.6.  A shared RSA-512 mesh group private key is present in the affected firmware and is used by the mesh protocol for node authentication.  An attacker who obtains the firmware image and has local network access may be able to authenticate as a mesh node without possessing a device-specific credential.

Successful exploitation may allow an unauthenticated adjacent attacker to impersonate a trusted mesh node and bypass mesh node authentication, which may permit unauthorized changes to device or mesh configuration, affecting confidentiality, integrity and availability.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity77% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 28, 2026

Advisory Details (5)

Auto-updated Aug 24, 2026
No patch confirmed yet.
generic

Security Advisory: Hard-coded Mesh Group Private Key in Deco XE75, XE5300, and WE10800 (CVE-2026-15469) | TP-Link

https://www.tp-link.com/us/support/faq/5263/
generic

Download for Deco WE10800 | TP-Link

https://www.tp-link.com/us/support/download/deco-we10800/#Firmware
generic

Download for Deco XE5300 | TP-Link

https://www.tp-link.com/us/support/download/deco-xe5300/#Firmware
generic

Download for Deco XE75 | TP-Link

https://www.tp-link.com/en/support/download/deco-xe75/v3.60/#Firmware
generic

Download for Deco XE75 | TP-Link

https://www.tp-link.com/us/support/download/deco-xe75/v3.60/#Firmware

Vendor Advisories for CVE-2026-15469(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 25× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 21:13 UTCGHSA enrichment
  3. 2026-08-29 08:17 UTCEG score recompute
  4. 2026-08-29 08:17 UTCGHSA enrichment
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-28 19:19 UTCGHSA enrichment
  7. 2026-08-28 13:10 UTCGHSA enrichment
  8. 2026-08-28 00:12 UTCEG score recompute
  9. 2026-08-28 00:11 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 11:14 UTCGHSA enrichment
  12. 2026-08-26 22:18 UTCEG score recompute
  13. 2026-08-26 22:18 UTCGHSA enrichment
  14. 2026-08-26 14:46 UTCEPSS rescore
  15. 2026-08-26 09:21 UTCEG score recompute
  16. 2026-08-26 09:20 UTCGHSA enrichment
  17. 2026-08-25 20:15 UTCEG score recompute
  18. 2026-08-25 20:15 UTCGHSA enrichment
  19. 2026-08-25 13:48 UTCEPSS rescore
  20. 2026-08-25 07:19 UTCGHSA enrichment
  21. 2026-08-24 18:22 UTCEG score recompute
  22. 2026-08-24 17:36 UTCEG score recompute
  23. 2026-08-24 17:19 UTCEG score recompute
  24. 2026-08-24 16:52 UTCEG score recompute
  25. 2026-08-24 16:51 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

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

  • GitHub PoCtony102741/CVE-2026-15469
    First seen Aug 25, 2026

    CVE-2026-15469 — Hard-coded RSA-512 mesh group private key in TP-Link Deco XE75/XE5300/WE10800 (CWE-321). Advisory, analysis & PoC methodology (EN/KO).

    Open source ↗

Frequently asked(5)

What is CVE-2026-15469?
CVE-2026-15469 is a high vulnerability published on August 24, 2026. The use of hard-coded cryptographic key vulnerability has been identified in the mesh functionality of Deco XE75 v3, XE5300 v3.6 and WE10800 v3.6. A shared RSA-512 mesh group private key is present in the affected firmware and is used by the mesh protocol for node authentication. An attacker who…
When was CVE-2026-15469 disclosed?
CVE-2026-15469 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15469 actively exploited?
CVE-2026-15469 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 82.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15469?
CVE-2026-15469 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-15469?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15469, 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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