CVE-2026-12562

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM 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: 0.5%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 30, 2026

Last Modified

September 8, 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 17× in last 7d / 78× 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 208 total refreshes for this CVE.

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

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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 on July 30, 2026, with the most recent update on September 8, 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 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12562?
CVE-2026-12562 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-12562?
A fix for CVE-2026-12562 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-12562 are linked in the Vendor Advisories panel on this page.

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