CVE-2026-12562

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-31. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

The RCU II+ and Multiload II+ are vulnerable to an unauthenticated service that exposes a debug interface granting full root-level access to the embedded system. This vulnerability stems from a network-accessible port running a Target Communications Framework (TCF) service that does not require any authentication, allowing an attacker to directly interact with the Linux environment that powers the device. Once connected, an attacker can freely view and modify the filesystem, manipulate running processes, and control network interfaces, enabling deep alteration of system behavior.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 30, 2026

Last Modified

July 31, 2026

Advisory Details (6)

Auto-updated Jul 30, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
generic

CSAF/csaf_files/OT/white/2026/icsa-26-211-03.json at develop · cisagov/CSAF · GitHub

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-03.json
cisa Patch Available🔴 Active Exploitation

Toptech Systems RCU II+ and Multiload II+ | CISA

Toptech Systems RCU II+ and Multiload II+ | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-03
generic
https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf
generic

Toptech Documents

https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/
generic
https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz
generic
https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip

Vendor Advisories for CVE-2026-12562(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 26× in last 7d / 81× 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. 2026-08-20 14:23 UTCGHSA enrichment
  2. 2026-08-20 01:10 UTCEG score recompute
  3. 2026-08-20 01:10 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 12:19 UTCGHSA enrichment
  6. 2026-08-18 23:29 UTCEG score recompute
  7. 2026-08-18 23:29 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-18 10:39 UTCGHSA enrichment
  10. 2026-08-17 21:48 UTCEG score recompute
  11. 2026-08-17 21:48 UTCGHSA enrichment
  12. 2026-08-17 08:49 UTCGHSA enrichment
  13. 2026-08-16 19:59 UTCEG score recompute
  14. 2026-08-16 19:59 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 07:08 UTCEG score recompute
  17. 2026-08-16 07:08 UTCGHSA enrichment
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-15 18:18 UTCGHSA enrichment
  20. 2026-08-15 05:27 UTCEG score recompute
  21. 2026-08-15 05:27 UTCGHSA enrichment
  22. 2026-08-15 01:30 UTCEPSS rescore
  23. 2026-08-14 16:36 UTCGHSA enrichment
  24. 2026-08-14 03:45 UTCEG score recompute
  25. 2026-08-14 03:45 UTCGHSA enrichment
Show 56 more
  1. 2026-08-13 22:00 UTCEPSS rescore
  2. 2026-08-13 14:54 UTCGHSA enrichment
  3. 2026-08-13 02:03 UTCEG score recompute
  4. 2026-08-13 02:03 UTCGHSA enrichment
  5. 2026-08-12 13:50 UTCEPSS rescore
  6. 2026-08-12 13:13 UTCGHSA enrichment
  7. 2026-08-12 00:22 UTCEG score recompute
  8. 2026-08-12 00:22 UTCGHSA enrichment
  9. 2026-08-11 13:42 UTCEPSS rescore
  10. 2026-08-11 11:25 UTCEG score recompute
  11. 2026-08-11 11:25 UTCGHSA enrichment
  12. 2026-08-10 23:59 UTCEPSS rescore
  13. 2026-08-10 22:35 UTCGHSA enrichment
  14. 2026-08-10 09:45 UTCGHSA enrichment
  15. 2026-08-09 20:54 UTCEG score recompute
  16. 2026-08-09 20:54 UTCGHSA enrichment
  17. 2026-08-09 13:46 UTCEPSS rescore
  18. 2026-08-09 08:04 UTCGHSA enrichment
  19. 2026-08-08 19:14 UTCEG score recompute
  20. 2026-08-08 19:14 UTCGHSA enrichment
  21. 2026-08-08 16:37 UTCEPSS rescore
  22. 2026-08-08 06:23 UTCGHSA enrichment
  23. 2026-08-07 17:33 UTCEG score recompute
  24. 2026-08-07 17:33 UTCGHSA enrichment
  25. 2026-08-07 04:42 UTCGHSA enrichment
  26. 2026-08-06 15:52 UTCEG score recompute
  27. 2026-08-06 15:52 UTCGHSA enrichment
  28. 2026-08-06 13:46 UTCEPSS rescore
  29. 2026-08-06 03:02 UTCEG score recompute
  30. 2026-08-06 03:02 UTCGHSA enrichment
  31. 2026-08-05 19:17 UTCEPSS rescore
  32. 2026-08-05 14:12 UTCGHSA enrichment
  33. 2026-08-05 01:18 UTCEG score recompute
  34. 2026-08-05 01:18 UTCGHSA enrichment
  35. 2026-08-04 15:09 UTCEPSS rescore
  36. 2026-08-04 12:27 UTCEG score recompute
  37. 2026-08-04 12:27 UTCGHSA enrichment
  38. 2026-08-04 10:38 UTCEPSS rescore
  39. 2026-08-03 21:31 UTCEG score recompute
  40. 2026-08-03 21:31 UTCGHSA enrichment
  41. 2026-08-03 10:35 UTCEPSS rescore
  42. 2026-08-03 08:41 UTCGHSA enrichment
  43. 2026-08-02 19:49 UTCGHSA enrichment
  44. 2026-08-02 06:59 UTCGHSA enrichment
  45. 2026-08-01 18:08 UTCGHSA enrichment
  46. 2026-08-01 05:17 UTCEG score recompute
  47. 2026-08-01 05:17 UTCGHSA enrichment
  48. 2026-08-01 04:15 UTCEPSS rescore
  49. 2026-07-31 16:25 UTCEG score recompute
  50. 2026-07-31 16:24 UTCGHSA enrichment
  51. 2026-07-31 13:27 UTCGHSA enrichment
  52. 2026-07-31 00:37 UTCEG score recompute
  53. 2026-07-31 00:36 UTCGHSA enrichment
  54. 2026-07-30 22:20 UTCEG score recompute
  55. 2026-07-30 21:51 UTCEG score recompute
  56. 2026-07-30 21:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12562?
CVE-2026-12562 is a high vulnerability published on July 30, 2026. The RCU II+ and Multiload II+ are vulnerable to an unauthenticated service that exposes a debug interface granting full root-level access to the embedded system. This vulnerability stems from a network-accessible port running a Target Communications Framework (TCF) service that does not require any…
When was CVE-2026-12562 disclosed?
CVE-2026-12562 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12562 actively exploited?
CVE-2026-12562 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 79.6% of all scored CVEs.
What is the CVSS score of CVE-2026-12562?
CVE-2026-12562 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-12562?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12562, 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

Explore the affected products and dependency analysis for CVE-2026-12562

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