CVE-2026-74681

UNRATEDCVSS · not yet scoredTrending — 3 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

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

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

usb: misc: usbio: check ibuf_len against rxbuf_len in bulk msg

ibuf_len is the bulk IN (receive) buffer size, but the EMSGSIZE check in usbio_bulk_msg() compares it against txbuf_len — the bulk OUT endpoint size. Both are taken independently from different endpoints in usbio_probe(), so the check is wrong when they differ.

Use rxbuf_len for the IN direction. This matches the buffer that actually holds the response data.

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 22, 2026

References (3)

Vendor Advisories for CVE-2026-74681(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 11× 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.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-28 19:25 UTCGHSA enrichment
  3. 2026-08-27 14:25 UTCEPSS rescore
  4. 2026-08-26 14:47 UTCEPSS rescore
  5. 2026-08-25 17:49 UTCEG score recompute
  6. 2026-08-25 17:49 UTCGHSA enrichment
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-24 14:18 UTCEPSS rescore
  9. 2026-08-22 16:24 UTCNVD update
  10. 2026-08-22 15:40 UTCEG score recompute
  11. 2026-08-22 15:35 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-74681?
CVE-2026-74681 is a publicly disclosed vulnerability published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: usb: misc: usbio: check ibuflen against rxbuflen in bulk msg ibuf_len is the bulk IN (receive) buffer size, but the EMSGSIZE check in usbiobulkmsg() compares it against txbuf_len — the bulk OUT endpoint size. Both are taken…
When was CVE-2026-74681 disclosed?
CVE-2026-74681 was first published in the National Vulnerability Database on August 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74681 actively exploited?
CVE-2026-74681 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.9% of all scored CVEs.
How do I remediate CVE-2026-74681?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74681, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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