CVE-2026-64076

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-45649 (ENISA EUVD) · GHSA-w5f5-9vqp-v57f (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: bridge: eb_tables: close module init race

sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nf_register_sockopt() completes, the sockopts are exposed globally.

sockopt has to be registered last, just like in ip/ip6/arptables.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). 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)14 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 total (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

July 19, 2026

Last Modified

October 21, 2026

Advisory Details (3)

Auto-updated Jul 21, 2026
Patch available.
Web page

netfilter: bridge: eb_tables: close module init race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4
Web page

netfilter: bridge: eb_tables: close module init race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/27414ff1b287ea9a2a11675149ec28e05539f3cc
Web page

netfilter: bridge: eb_tables: close module init race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/02d999dc69b3918dba2414932b5d95f1f75c76cb

Vendor Advisories for CVE-2026-64076(2)

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

Patch Availability(9)

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (358 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (142 versions)
  • every version up to 7.0.12-1: fixed in 7.0.12-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(9)

Data Freshness Timeline

(refreshed 13× in last 7d / 61× 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 100 of 340 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. None are among the latest 100 rows. The 240 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-25 14:12 UTCEG score recompute
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-21 13:50 UTCEG score recompute
  9. 2026-10-21 13:50 UTCVendor advisory
  10. 2026-10-21 13:50 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-10-21 12:56 UTCEG score recompute
  12. 2026-10-21 12:56 UTCVendor advisory
  13. 2026-10-21 12:56 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  14. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-10-19 21:38 UTCEG score recompute
  16. 2026-10-19 21:38 UTCVendor advisory
  17. 2026-10-19 21:37 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  18. 2026-10-19 20:35 UTCEG score recompute
  19. 2026-10-19 20:35 UTCVendor advisory
  20. 2026-10-19 20:35 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  21. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-10-18 03:23 UTCEG score recompute
  24. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-10-16 17:18 UTCEG score recompute
Show 75 more
  1. 2026-10-16 17:18 UTCVendor advisory
  2. 2026-10-16 17:17 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-16 15:53 UTCEG score recompute
  5. 2026-10-16 15:53 UTCVendor advisory
  6. 2026-10-16 15:53 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  7. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-10-13 11:46 UTCEG score recompute
  11. 2026-10-13 11:46 UTCVendor advisory
  12. 2026-10-13 11:46 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-12 15:48 UTCEG score recompute
  15. 2026-10-11 19:33 UTCEG score recompute
  16. 2026-10-11 16:48 UTCEG score recompute
  17. 2026-10-11 14:09 UTCEG score recompute
  18. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  26. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  27. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  28. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  29. 2026-10-01 08:17 UTCEG score recompute
  30. 2026-10-01 08:17 UTCVendor advisory
  31. 2026-10-01 08:17 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  32. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  33. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  34. 2026-09-28 07:20 UTCEG score recompute
  35. 2026-09-28 07:20 UTCVendor advisory
  36. 2026-09-28 07:20 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  37. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  38. 2026-09-24 03:37 UTCEG score recompute
  39. 2026-09-24 03:37 UTCVendor advisory
  40. 2026-09-24 03:37 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  41. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-09-23 01:57 UTCEG score recompute
  43. 2026-09-23 01:57 UTCVendor advisory
  44. 2026-09-23 01:57 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  47. 2026-09-18 04:15 UTCEG score recompute
  48. 2026-09-18 04:15 UTCVendor advisory
  49. 2026-09-18 04:14 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  50. 2026-09-17 05:24 UTCEG score recompute
  51. 2026-09-17 05:24 UTCVendor advisory
  52. 2026-09-17 05:24 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  53. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-09-16 12:57 UTCEG score recompute
  55. 2026-09-16 12:57 UTCVendor advisory
  56. 2026-09-16 12:57 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  57. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-09-14 10:51 UTCVendor advisory
  59. 2026-09-14 10:51 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  60. 2026-09-13 22:55 UTCEG score recompute
  61. 2026-09-13 22:55 UTCVendor advisory
  62. 2026-09-13 22:55 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  63. 2026-09-13 07:34 UTCVendor advisory
  64. 2026-09-13 07:34 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  65. 2026-09-12 19:36 UTCEG score recompute
  66. 2026-09-12 19:36 UTCVendor advisory
  67. 2026-09-12 19:36 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  68. 2026-09-12 07:12 UTCVendor advisory
  69. 2026-09-12 07:12 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  70. 2026-09-11 18:45 UTCEG score recompute
  71. 2026-09-11 18:45 UTCVendor advisory
  72. 2026-09-11 18:45 UTCGHSA enrichmentGHSA-w5f5-9vqp-v57f · GitHub severity HIGH · GitHub CVSS 7.8
  73. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  74. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

Frequently asked(5)

What is CVE-2026-64076?
CVE-2026-64076 is a high-severity vulnerability; its CVE record was published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: eb_tables: close module init race sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nfregistersockopt() completes, the sockopts are exposed…
When was the CVE record for CVE-2026-64076 published?
The CVE record for CVE-2026-64076 was published on July 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 21, 2026; the record at its source may have been updated since.
Is CVE-2026-64076 actively exploited?
CVE-2026-64076 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64076?
CVE-2026-64076 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-64076?
A fix for CVE-2026-64076 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-64076 are linked in the Vendor Advisories panel on this page.

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