CVE-2026-46114VulnerabilityPublished 2 May 2026Updated 9 Jun 2026

Microsoft · RDMA/rxe: Reject non-8-byte ATOMIC_WRITE payloads

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-46114· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in d415fce3fcde6d7aeea6c25362a395b905811452 : patch Microsoft soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d415fce3fcde6d7aeea6c25362a395b905811452, 1114c87aa6f195cf07da55a27b2122ae26557b26, 539cabb7b2d8ba70f55bba91db55faef11c2a6d7 +2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

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 ≥ 034e285f8b99062a0cf29112e1232154a6a44aa5, < d415fce3fcde6d7aeea6c25362a395b905811452	Fixed in d415fce3fcde6d7aeea6c25362a395b905811452
LinuxLinux	Affected ≥ 034e285f8b99062a0cf29112e1232154a6a44aa5, < 1114c87aa6f195cf07da55a27b2122ae26557b26	Fixed in 1114c87aa6f195cf07da55a27b2122ae26557b26
LinuxLinux	Affected ≥ 034e285f8b99062a0cf29112e1232154a6a44aa5, < 539cabb7b2d8ba70f55bba91db55faef11c2a6d7	Fixed in 539cabb7b2d8ba70f55bba91db55faef11c2a6d7
LinuxLinux	Affected ≥ 034e285f8b99062a0cf29112e1232154a6a44aa5, < 105bf79a23b85cf3a761d18a4f3e10ce88526bc1	Fixed in 105bf79a23b85cf3a761d18a4f3e10ce88526bc1
LinuxLinux	Affected ≥ 034e285f8b99062a0cf29112e1232154a6a44aa5, < 7ec1ed4747f5f99f8b797bb438c5efd36079fad5	Fixed in 7ec1ed4747f5f99f8b797bb438c5efd36079fad5
LinuxLinux	Affected =6.2	Fixed in–

Description

This vulnerability concerns the RDMA/rxe component rejecting non-8-byte ATOMIC_WRITE payloads. It affects Microsoft product version 3.0. No CVSS score is provided, and no known exploits are reported in the wild. The vendor has not provided patch or remediation details in the available data.

Impact

The impact is not explicitly described in the available data. There are no known exploits in the wild, and no CVSS score is provided to assess severity. The vulnerability may cause issues related to handling of atomic write operations with payload sizes other than 8 bytes, but specific consequences are not detailed.

Summary

The vulnerability identified as CVE-2026-46114 involves the RDMA/rxe module in Microsoft software, specifically rejecting ATOMIC_WRITE payloads that are not 8 bytes in size. The exact impact or exploitation method is not detailed in the provided information. The affected version is Microsoft product version 3.0. No further technical details or CVSS scoring are available.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Oct 2026, 20:44 UTC

Technical details

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