CVE-2025-13805Public exploitNetwork attack vector

Unauthenticated code execution via unfiltered Java deserialization

Published Dec 1, 2025 · Updated Feb 24, 2026

Deserialization in NutzBoot 2.6.0-SNAPSHOT allows remote attackers to execute code through the LiteRPC HTTP endpoint. HttpServletRpcEndpoint accepts a client-selected JDK serializer, which calls ObjectInputStream.readObject on the request body without a filter or class allowlist. No authentication or user interaction is required, but the LiteRPC endpoint and a usable classpath gadget chain must be present; code runs as the service process.

CVSS severity3.7
Low
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in NutzBoot 2.6.0-SNAPSHOT allows remote attackers to execute code through the LiteRPC HTTP endpoint. HttpServletRpcEndpoint accepts a client-selected JDK serializer, which calls ObjectInputStream.readObject on the request body without a filter or class allowlist. No authentication or user interaction is required, but the LiteRPC endpoint and a usable classpath gadget chain must be present; code runs as the service process.

The record

CVE
CVE-2025-13805
Published
Dec 1, 2025
Updated
Feb 24, 2026
Vendor
Nutz
Product
NutzBoot
Classifications
CWE-20, CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 2026Record 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=2.6.0-SNAPSHOT

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nutz · NutzBootversion=2.6.0-SNAPSHOT

Published CVSS scores

2.9VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.7VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
2.6VulDBAV:N/AC:H/Au:N/C:P/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

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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