CVE-2026-74648

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-22. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: 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:

staging: rtl8723bs: validate monitor transmit frame lengths

rtw_cfg80211_monitor_if_xmit_entry() removes the radiotap header and then reads the 802.11 frame control field without checking that a base 802.11 header remains.

The data path also pulls the calculated 802.11, QoS and SNAP header span before confirming that the skb contains it. A truncated frame can therefore cause out-of-bounds reads or leave insufficient data for the Ethernet address writes.

Reject frames that do not contain the base 802.11 header and data frames that do not contain their complete calculated header span.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 25, 2026

Advisory Details (8)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6829665d050983907b560173e49dcc6c11cb2730
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd88f6289b7e483216a9c1df15a0460ef9b02cb6
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7b0f62d2986a28e5e4188366bc2f4e2868b14790
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c5e5d78743992e235b76d2ebe5a403d60315aa8a
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7edd3adb0c80d70b4237640275c559610f438476
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a3ac6d849de5f7abe14761d741bbb843ac793454
generic

staging: rtl8723bs: validate monitor transmit frame lengths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f03398d835f5249c49546f0eb0d0df6792b95d5f

Vendor Advisories for CVE-2026-74648(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 23× in last 7d / 26× 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. 2026-08-29 17:36 UTCGHSA enrichment
  3. 2026-08-29 03:14 UTCEG score recompute
  4. 2026-08-29 03:14 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 13:59 UTCGHSA enrichment
  7. 2026-08-28 00:45 UTCEG score recompute
  8. 2026-08-28 00:45 UTCGHSA enrichment
  9. 2026-08-27 14:25 UTCEPSS rescore
  10. 2026-08-27 11:19 UTCGHSA enrichment
  11. 2026-08-26 22:06 UTCEG score recompute
  12. 2026-08-26 22:06 UTCGHSA enrichment
  13. 2026-08-26 14:47 UTCEPSS rescore
  14. 2026-08-26 08:53 UTCGHSA enrichment
  15. 2026-08-25 19:41 UTCEG score recompute
  16. 2026-08-25 19:41 UTCGHSA enrichment
  17. 2026-08-25 13:49 UTCEPSS rescore
  18. 2026-08-25 06:29 UTCEG score recompute
  19. 2026-08-25 06:29 UTCGHSA enrichment
  20. 2026-08-25 05:56 UTCEG score recompute▲ 7.80
  21. 2026-08-25 05:56 UTCGHSA enrichment
  22. 2026-08-25 05:55 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  23. 2026-08-24 14:18 UTCEPSS rescore
  24. 2026-08-22 16:24 UTCNVD update
  25. 2026-08-22 15:41 UTCEG score recompute
Show 1 more
  1. 2026-08-22 15:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74648?
CVE-2026-74648 is a high vulnerability published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: validate monitor transmit frame lengths rtwcfg80211monitorifxmit_entry() removes the radiotap header and then reads the 802.11 frame control field without checking that a base 802.11 header remains. The data…
When was CVE-2026-74648 disclosed?
CVE-2026-74648 was first published in the National Vulnerability Database on August 22, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74648 actively exploited?
CVE-2026-74648 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-74648?
CVE-2026-74648 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-74648?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74648, 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.

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