CVE-2025-66216Public exploitNetwork attack vector

Remote code execution via bit-byte bounds confusion

Published Nov 29, 2025 · Updated Dec 1, 2025

Heap buffer overflow in AIS::Message in jvde-github AIS-catcher before 0.64 allows remote attackers to execute arbitrary code via oversized packets. The setUint and setText methods compare byte counts against a bit-based maximum, permitting writes of up to 1,024 bytes into the 128-byte data array. Unauthenticated network access is sufficient; corrupting an adjacent NMEA vector yields arbitrary read/write and control-flow hijacking, while simpler input crashes the service.

CVSS severity9.3
Critical
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in AIS::Message in jvde-github AIS-catcher before 0.64 allows remote attackers to execute arbitrary code via oversized packets. The setUint and setText methods compare byte counts against a bit-based maximum, permitting writes of up to 1,024 bytes into the 128-byte data array. Unauthenticated network access is sufficient; corrupting an adjacent NMEA vector yields arbitrary read/write and control-flow hijacking, while simpler input crashes the service.

The record

CVE
CVE-2025-66216
Published
Nov 29, 2025
Updated
Dec 1, 2025
Vendor
jvde-github
Product
AIS-catcher
Classifications
CWE-131, CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 1, 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=< 0.64

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jvde-github · AIS-catcherversion=< 0.64

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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-131Incorrect Calculation of Buffer Size
CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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