CVE-2022-45313Public exploitNetwork attack vector

Remote code execution via hotspot nova message

Published Dec 5, 2022 · Updated Apr 24, 2025

Out-of-bounds read in MikroTik RouterOS before 7.5 allows remote authenticated users to execute arbitrary code via a crafted nova message. The hotspot process fails to validate a signed u32_id value from a nova message, accepts a negative index, reads outside a dispatch table, and uses the resulting data as an indirect-call function pointer. Exploitation requires an authenticated account on the device through an exposed management interface; the proof of concept demonstrates a crash and describes code execution capability.

CVSS severity8.8
High
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in MikroTik RouterOS before 7.5 allows remote authenticated users to execute arbitrary code via a crafted nova message. The hotspot process fails to validate a signed u32_id value from a nova message, accepts a negative index, reads outside a dispatch table, and uses the resulting data as an indirect-call function pointer. Exploitation requires an authenticated account on the device through an exposed management interface; the proof of concept demonstrates a crash and describes code execution capability.

The record

CVE
CVE-2022-45313
Published
Dec 5, 2022
Updated
Apr 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8[email protected]CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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