CVE-2026-46241VulnerabilityPublished 29 May 2026Updated 24 Sep 2026

Microsoft · spi: mpc52xx: fix use-after-free on registration failure

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-46241· High

Not known to be exploited · fixed in f62c060272b9d7423b1650b844e8e4e7b8f9f925 : patch Microsoft soon.

Data as of 29 Oct 2026, 19:04 UTC

Severity

High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f62c060272b9d7423b1650b844e8e4e7b8f9f925, dd74a790818ebb9a2be3a94ac935a374755cd278, 336d9ad7560b3baba17af06727a888040ee93390 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 28 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 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

microsoft-security-response-ce

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 42bbb70980f3720b0ae6da6af862af0e95a04351, < f62c060272b9d7423b1650b844e8e4e7b8f9f925	Fixed in f62c060272b9d7423b1650b844e8e4e7b8f9f925
LinuxLinux	Affected ≥ 42bbb70980f3720b0ae6da6af862af0e95a04351, < dd74a790818ebb9a2be3a94ac935a374755cd278	Fixed in dd74a790818ebb9a2be3a94ac935a374755cd278
LinuxLinux	Affected ≥ 42bbb70980f3720b0ae6da6af862af0e95a04351, < 336d9ad7560b3baba17af06727a888040ee93390	Fixed in 336d9ad7560b3baba17af06727a888040ee93390
LinuxLinux	Affected ≥ 42bbb70980f3720b0ae6da6af862af0e95a04351, < 8b49b6aadd0c622ca7d68b4a53ae10362e221cf3	Fixed in 8b49b6aadd0c622ca7d68b4a53ae10362e221cf3
LinuxLinux	Affected ≥ 42bbb70980f3720b0ae6da6af862af0e95a04351, < 5c77f11b9b5f1ad5a704dad875260c44016ede10	Fixed in 5c77f11b9b5f1ad5a704dad875260c44016ede10
LinuxLinux	Affected =2.6.33	Fixed in–

Description

CVE-2026-46241 is a use-after-free vulnerability in the spi: mpc52xx driver that occurs on registration failure. This flaw could lead to memory corruption issues if triggered. The affected version is exactly 3.0. No public exploit code or active exploitation is known at this time.

Impact

The use-after-free vulnerability may allow an attacker to cause memory corruption, which could result in denial of service or potentially other unintended behavior depending on the context of exploitation. However, no confirmed exploitation or public exploit code is currently known.

Summary

The vulnerability identified as CVE-2026-46241 involves a use-after-free condition in the spi: mpc52xx component during registration failure scenarios. This type of flaw can cause the system to reference memory that has already been freed, potentially leading to instability or security risks. The only explicitly affected version is 3.0. There is no CVSS score or detailed impact metrics available, and no known exploits have been reported.

CWE-416Use After Free (opens in a new tab)
Variant weaknessLikelihood of exploit: HighCWE Top 25 (2025): #7
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Architecture and Design · Language Selection
Choose a language that provides automatic memory management.
Implementation · Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Oct 2026, 20:45 UTC

WeaknessesCWE-416

Technical details

References

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