CVE-2026-58374

HIGHNVD 7.17.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 6.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-06-30) is not newer than that change (2026-10-25), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2026-40306 (ENISA EUVD) · GHSA-f38w-mwf7-vv8p (GitHub Security Advisories)Source: ENISA EUVD

7.1EG
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: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile subelement. In hostapd_process_ml_assoc_req() in src/ap/ieee802_11_eht.c, the received link_id field can be parsed as value 15, but the corresponding links[] storage only has valid entries for lower link IDs (0 through 14). This causes an out-of-bounds write / small memory corruption during association processing before the 4-way handshake. The attack does not require network credentials, prior authentication, or user interaction. The confirmed practical impact is denial of service through hostapd process termination. This affects hostapd v2.11 and newer development snapshots before v2.12 when built with CONFIG_IEEE80211BE enabled. The issue is fixed in hostapd v2.12 and the upstream 2026-1 fixes.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 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 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
22nd
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 (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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

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

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.

The score's inputs: 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

June 30, 2026

Last Modified

October 25, 2026

Advisory Details (5)

Auto-updated Jun 30, 2026
Patch available.
Web page

oss-security - hostapd: OOB write in Wi-Fi 7 MLD association parsing (pre-auth DoS)

https://www.openwall.com/lists/oss-security/2026/06/30/1
Web page
https://w1.fi/security/2026-1/missing-ml-parsing-validation.txt
Web page

Index of /security/2026-1

https://w1.fi/security/2026-1/
Web page

BSS: Add bounds check for link_id in Basic MLE parsing - hostap - hostapd/wpa_supplicant

https://git.w1.fi/cgit/hostap/commit/?id=aa9d345887389a251c63a3781d2ad2940d079193
Web page

AP MLD: Fix link ID validation in Basic MLE parsing - hostap - hostapd/wpa_supplicant

https://git.w1.fi/cgit/hostap/commit/?id=46dd5a4ffc9bcf44cf8fc45120b3e1e5ec922187

Vendor Advisories for CVE-2026-58374(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhathostapd-0:2.11-3.el10_22026-10-19redhat
redhathostapd-0:2.11-3.el9_82026-10-19redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× 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 272 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 172 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-11-01 10:25 UTCEG score recompute
  3. 2026-11-01 10:25 UTCVendor advisory
  4. 2026-11-01 10:25 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub severity MODERATE · GitHub CVSS 6.5
  5. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  6. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  7. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  8. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  10. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-10-25 21:30 UTCEG score recompute
  12. 2026-10-25 21:30 UTCVendor advisory
  13. 2026-10-25 21:29 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  14. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-10-25 14:16 UTCEG score recompute
  16. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  17. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-10-23 01:59 UTCEG score recompute
  19. 2026-10-23 01:59 UTCVendor advisory
  20. 2026-10-23 01:59 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  21. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  22. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Show 75 more
  1. 2026-10-18 03:28 UTCEG score recompute
  2. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-16 13:04 UTCEG score recompute
  5. 2026-10-16 13:04 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  6. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-10-13 18:24 UTCOSV refresh
  9. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  10. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-12 15:53 UTCEG score recompute
  12. 2026-10-11 19:36 UTCEG score recompute
  13. 2026-10-11 16:52 UTCEG score recompute
  14. 2026-10-11 14:14 UTCEG score recompute
  15. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  16. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  26. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  27. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  28. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  29. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  30. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  31. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  32. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  33. 2026-09-23 07:22 UTCEG score recompute
  34. 2026-09-23 07:22 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  35. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  36. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  37. 2026-09-18 06:50 UTCEG score recompute
  38. 2026-09-18 06:50 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  39. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  40. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  41. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  42. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  43. 2026-09-14 00:48 UTCEG score recompute
  44. 2026-09-14 00:48 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  45. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  46. 2026-09-13 09:17 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  47. 2026-09-12 15:10 UTCEG score recompute
  48. 2026-09-12 15:10 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  49. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  50. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  51. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  53. 2026-09-06 14:37 UTCEG score recompute
  54. 2026-09-06 14:37 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  55. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  56. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  57. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  58. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  59. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  60. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  61. 2026-08-30 18:09 UTCEG score recompute
  62. 2026-08-30 18:09 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  63. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  64. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  65. 2026-08-27 22:42 UTCEG score recompute
  66. 2026-08-27 22:42 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  67. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  69. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  70. 2026-08-24 21:45 UTCEG score recompute
  71. 2026-08-24 21:45 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  72. 2026-08-24 05:17 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  73. 2026-08-23 18:25 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5
  74. 2026-08-23 07:35 UTCEG score recompute
  75. 2026-08-23 07:35 UTCGHSA enrichmentGHSA-f38w-mwf7-vv8p · GitHub CVSS 6.5

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58374?
CVE-2026-58374 is a high-severity vulnerability; its CVE record was published on June 30, 2026. In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile…
When was the CVE record for CVE-2026-58374 published?
The CVE record for CVE-2026-58374 was published on June 30, 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 25, 2026; the record at its source may have been updated since.
Is CVE-2026-58374 actively exploited?
CVE-2026-58374 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58374?
CVE-2026-58374 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-58374?
A fix for CVE-2026-58374 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58374 are linked in the Vendor Advisories panel on this page.

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