CVE-2026-43110

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-06. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
8.8EG
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: 0.3%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

wifi: brcmfmac: validate bsscfg indices in IF events

brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check.

Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array.

[add missing wifi prefix]

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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 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
0.3%
EPSS %ILE
18th
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 (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-19). 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

May 6, 2026

Last Modified

October 19, 2026

Advisory Details (5)

Auto-updated May 8, 2026
Patch available.
Web page

wifi: brcmfmac: validate bsscfg indices in IF events - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b427c2b05222db36d32ee141609de6128e9091bb
Web page

wifi: brcmfmac: validate bsscfg indices in IF events - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9fca68c2512a362cad258e4df12a307bb2ee4b8e
Web page

wifi: brcmfmac: validate bsscfg indices in IF events - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3ec7437e9d11374105c2c4e47ae671537729d7e6
Web page

wifi: brcmfmac: validate bsscfg indices in IF events - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/304950a467d83678bd0b0f46331882e2ac23b12d
Web page

wifi: brcmfmac: validate bsscfg indices in IF events - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1ae1e1caa428844e481231f6dbe9b4f475f1d52d

Patch Availability(31)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-10-19ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1106.104) @ jammy2026-10-19ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-10-19ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-10-19ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-10-19ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-10-19ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-10-19ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-10-19ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-10-19ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-10-19ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-10-19ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-136.136.2~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-10-19ubuntu
redhatkernel-rt-0:3.10.0-1160.155.1.rt56.1307.el72026-07-17redhat
redhatkernel-0:3.10.0-1160.153.1.el72026-06-22redhat
redhatkernel-0:4.18.0-305.194.1.el8_42026-06-17redhat
redhatkernel-rt-0:5.14.0-284.176.1.rt14.461.el9_22026-06-17redhat
redhatkernel-0:4.18.0-477.147.1.el8_82026-06-17redhat
redhatkernel-rt-0:4.18.0-553.134.1.rt7.475.el8_102026-06-16redhat
redhatkernel-0:4.18.0-553.134.1.el8_102026-06-16redhat
redhatkernel-0:4.18.0-372.195.1.el8_62026-06-12redhat
redhatkernel-0:5.14.0-570.120.1.el9_62026-06-11redhat
redhatkernel-0:6.12.0-55.77.1.el10_02026-06-08redhat
redhatkernel-0:5.14.0-427.129.1.el9_42026-06-04redhat
redhatkernel-0:6.12.0-211.18.1.el10_22026-05-28redhat
redhatkernel-0:5.14.0-687.12.1.el9_82026-05-28redhat
linuxKernel @ 5.10.258 (fixes >=3.9.0)—osv

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)
  • every version up to 5.10.259-1: fixed in 5.10.259-1
—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)
  • every version up to 6.1.176-1~deb11u1: fixed in 6.1.176-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)
  • every version up to 6.1.176-1: fixed in 6.1.176-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)
  • every version up to 6.12.85-1: fixed in 6.12.85-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (130 versions)
  • every version up to 6.19.14-1: fixed in 6.19.14-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(12)

Data Freshness Timeline

(refreshed 13× in last 7d / 47× 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 297 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 197 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  2. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 18th percentile
  3. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  4. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  5. 2026-10-19 20:30 UTCVendor advisory
  6. 2026-10-19 20:29 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  7. 2026-10-19 19:25 UTCEG score recompute
  8. 2026-10-19 19:25 UTCVendor advisory
  9. 2026-10-19 19:25 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  10. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  11. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  12. 2026-10-18 03:40 UTCEG score recompute
  13. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  14. 2026-10-16 17:05 UTCEG score recompute
  15. 2026-10-16 17:05 UTCVendor advisory
  16. 2026-10-16 17:04 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  18. 2026-10-16 15:38 UTCEG score recompute
  19. 2026-10-16 15:38 UTCVendor advisory
  20. 2026-10-16 15:37 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  22. 2026-10-15 02:34 UTCVendor advisory
  23. 2026-10-15 02:33 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  24. 2026-10-15 01:37 UTCEG score recompute
  25. 2026-10-15 01:37 UTCVendor advisory
Show 75 more
  1. 2026-10-15 01:36 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  2. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-10-12 16:06 UTCEG score recompute
  6. 2026-10-11 19:48 UTCEG score recompute
  7. 2026-10-11 17:02 UTCEG score recompute
  8. 2026-10-11 14:28 UTCEG score recompute
  9. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-09-30 10:11 UTCOSV refresh
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  23. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  24. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  26. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  28. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  29. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  30. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  31. 2026-09-11 16:53 UTCOSV refresh
  32. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  33. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  34. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  35. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  36. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  37. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  38. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  39. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  40. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  41. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  42. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  43. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  44. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  45. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  46. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  47. 2026-08-23 20:25 UTCEG score recompute
  48. 2026-08-23 20:25 UTCVendor advisory
  49. 2026-08-23 20:24 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  50. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  51. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  52. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  53. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  54. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  55. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  56. 2026-08-17 12:59 UTCEG score recompute
  57. 2026-08-17 12:59 UTCVendor advisory
  58. 2026-08-17 12:59 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  59. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  60. 2026-08-16 04:55 UTCEG score recompute
  61. 2026-08-16 04:55 UTCVendor advisory
  62. 2026-08-16 04:55 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  63. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  64. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  65. 2026-08-14 15:14 UTCVendor advisory
  66. 2026-08-14 15:14 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  67. 2026-08-14 03:30 UTCEG score recompute
  68. 2026-08-14 03:30 UTCVendor advisory
  69. 2026-08-14 03:30 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  71. 2026-08-13 04:53 UTCVendor advisory
  72. 2026-08-13 04:53 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-08-12 17:09 UTCEG score recompute
  74. 2026-08-12 17:09 UTCVendor advisory
  75. 2026-08-12 17:09 UTCGHSA enrichmentGHSA-24vc-pxrh-rpjv · GitHub severity HIGH · GitHub CVSS 8.8

Frequently asked(5)

What is CVE-2026-43110?
CVE-2026-43110 is a high-severity vulnerability; its CVE record was published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: validate bsscfg indices in IF events brcmffwehhandleifevent() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a…
When was the CVE record for CVE-2026-43110 published?
The CVE record for CVE-2026-43110 was published on May 6, 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 19, 2026; the record at its source may have been updated since.
Is CVE-2026-43110 actively exploited?
CVE-2026-43110 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43110?
CVE-2026-43110 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-43110?
A fix for CVE-2026-43110 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-43110 are linked in the Vendor Advisories panel on this page.

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