IPsec MAC address query · net/mlx5e: Fix "scheduling while atomic
Affects MicrosoftSource GCVE Database
Not known to be exploited · CVSS 7.5 High · fixed in e1407fb7c337373dfaaae2445d828b0b9ae26a29 : patch Microsoft soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in e1407fb7c337373dfaaae2445d828b0b9ae26a29, 859380694f434597407632c29f30fdb5e763e6cc, 57957bc7f1865778ec9b1618e15515feb6df7eb4 +2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 May 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 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| 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– |
Description
CVE-2026-43199 is a vulnerability related to the net/mlx5e driver component in Microsoft software, specifically addressing a "scheduling while atomic" issue in the IPsec MAC address query functionality. The affected version explicitly identified is version 3.0. No CVSS score is provided for this vulnerability. There are no known exploits in the wild at this time.