brcms_free_timer() · wifi: brcmsmac: fix UAF
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in 856dabd5f2617efb23c043be9e1b22a9e6e97c41 : patch Microsoft soon.
Data as of 2 Nov 2026, 10:58 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 856dabd5f2617efb23c043be9e1b22a9e6e97c41, 777cb6bba59e875b16a1d8897a483a5fecfcd5d2, 74acccc928851f69184271832d690607877122af +5
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
This vulnerability concerns a use-after-free (UAF) flaw in the brcmsmac wireless driver function brcms_free_timer(). It affects Microsoft products with versions 3.0 and 4.0. No CVSS score or detailed impact information is provided, and there is no indication of known exploitation in the wild.