CVE-2025-10948Public exploitNetwork attack vectorHinoki check available

Authenticated service crash via malformed Unicode escape

Published Sep 25, 2025 · Updated Sep 25, 2025

Buffer overflow in MikroTik RouterOS 7 allows remote authenticated users to crash the REST service through a crafted JSON request. In libjson.so, parse_json_element mishandles a truncated Unicode escape, consumes parser state incorrectly, and scans beyond the supplied string for a closing quote. Exploitation requires REST API credentials and an enabled HTTP or HTTPS management service; the demonstrated consequence is a service crash, not confirmed code execution.

CVSS severity8.8
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Buffer overflow in MikroTik RouterOS 7 allows remote authenticated users to crash the REST service through a crafted JSON request. In libjson.so, parse_json_element mishandles a truncated Unicode escape, consumes parser state incorrectly, and scans beyond the supplied string for a closing quote. Exploitation requires REST API credentials and an enabled HTTP or HTTPS management service; the demonstrated consequence is a service crash, not confirmed code execution.

The record

CVE
CVE-2025-10948
Published
Sep 25, 2025
Updated
Sep 25, 2025
Vendor
MikroTik
Product
RouterOS
Classifications
CWE-120, CWE-119, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MikroTik · RouterOSversion=7

Published CVSS scores

7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS: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.

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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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.004Application or System Exploitation

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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