CVE-2026-81576

HIGHPre-NVD 7.77.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. A secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.7Exploit: None knownExposed services: Not assessed

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

If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read license information belonging to another handle.

CVSS v3
7.7
EG Score
7.7HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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 (value × EchelonGraph’s weight)
Severity77% × 45%
The EG Score, 7.7 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 27, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
No fix on record yet.
Web page
https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdf

Vendor Advisories for CVE-2026-81576(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 22× in last 7d / 100× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 165 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 66 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:20 UTCEG score recompute
  2. 2026-10-11 16:37 UTCEG score recompute
  3. 2026-10-11 13:55 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-10-10 05:22 UTCEG score recompute
  7. 2026-10-10 05:22 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-10-09 03:11 UTCEG score recompute
  10. 2026-10-09 03:11 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  12. 2026-10-08 01:23 UTCEG score recompute
  13. 2026-10-08 01:23 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  15. 2026-10-07 09:26 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  16. 2026-10-06 20:42 UTCEG score recompute
  17. 2026-10-06 20:42 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  19. 2026-10-06 07:34 UTCEG score recompute
  20. 2026-10-06 07:33 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-10-05 17:37 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  23. 2026-10-05 05:01 UTCEG score recompute
  24. 2026-10-05 05:01 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 25th percentile
Show 74 more
  1. 2026-10-04 16:25 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  2. 2026-10-04 03:49 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  3. 2026-10-03 15:14 UTCEG score recompute
  4. 2026-10-03 15:14 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  5. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-10-02 22:22 UTCEG score recompute
  7. 2026-10-02 22:22 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  8. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-10-02 09:46 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  10. 2026-10-01 21:10 UTCEG score recompute
  11. 2026-10-01 21:10 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  12. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  13. 2026-10-01 08:35 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  14. 2026-09-30 19:56 UTCEG score recompute
  15. 2026-09-30 19:56 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  16. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  17. 2026-09-30 05:08 UTCEG score recompute
  18. 2026-09-30 05:08 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  19. 2026-09-29 12:19 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  20. 2026-09-28 21:43 UTCEG score recompute
  21. 2026-09-28 21:43 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  22. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  23. 2026-09-28 09:08 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  24. 2026-09-27 20:32 UTCEG score recompute
  25. 2026-09-27 20:32 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  26. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  27. 2026-09-27 07:57 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  28. 2026-09-26 19:21 UTCEG score recompute
  29. 2026-09-26 19:21 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  30. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  31. 2026-09-25 11:44 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  32. 2026-09-24 22:09 UTCEG score recompute
  33. 2026-09-24 22:09 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  34. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  35. 2026-09-24 08:30 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  36. 2026-09-23 19:55 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  37. 2026-09-23 07:20 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  38. 2026-09-22 18:44 UTCEG score recompute
  39. 2026-09-22 18:44 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  40. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  41. 2026-09-22 05:55 UTCEG score recompute
  42. 2026-09-22 05:55 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  43. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  44. 2026-09-21 17:20 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  45. 2026-09-21 04:00 UTCEG score recompute
  46. 2026-09-21 04:00 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  47. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  48. 2026-09-20 15:25 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  49. 2026-09-20 02:49 UTCEG score recompute
  50. 2026-09-20 02:48 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  51. 2026-09-19 14:13 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  52. 2026-09-19 01:14 UTCEG score recompute
  53. 2026-09-19 01:14 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  54. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  55. 2026-09-18 12:39 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  56. 2026-09-18 00:03 UTCEG score recompute
  57. 2026-09-18 00:03 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  58. 2026-09-17 11:15 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  59. 2026-09-16 22:39 UTCEG score recompute
  60. 2026-09-16 22:39 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  61. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  62. 2026-09-16 09:35 UTCEG score recompute
  63. 2026-09-16 09:35 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  64. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  65. 2026-09-15 20:59 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  66. 2026-09-15 08:23 UTCEG score recompute
  67. 2026-09-15 08:23 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  68. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  69. 2026-09-14 19:47 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  70. 2026-09-14 07:12 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  71. 2026-09-13 18:36 UTCEG score recompute
  72. 2026-09-13 18:36 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  73. 2026-09-13 06:00 UTCGHSA enrichmentGHSA-gj9j-5pfx-gc7p · GitHub severity HIGH · GitHub CVSS 7.7
  74. 2026-09-12 17:24 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81576?
CVE-2026-81576 is a high-severity vulnerability; its CVE record was published on August 27, 2026. If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read license information belonging to another…
When was CVE-2026-81576 made public?
CVE-2026-81576 was made public on August 25, 2026: that is the date its CVE record's CNA, WIBU-SYSTEMS AG, gives for when the vulnerability was made public. The CVE record itself was published on August 27, 2026. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-81576 actively exploited?
CVE-2026-81576 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81576?
CVE-2026-81576 has a CVSS base score of 7.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81576?
No fix for CVE-2026-81576 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-81576 are linked in the Vendor Advisories panel on this page.

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