CVE-2025-67268Public exploitNetwork attack vector

Daemon crash via unchecked satellite count

Published Jan 2, 2026 · Updated Jan 2, 2026

Heap-based out-of-bounds write in gpsd before 3.27.1 allows attackers to corrupt memory via a crafted NMEA2000 packet. The hnd_129540 handler trusts the packet's satellite-count byte and uses it to index the fixed-size skyview array without enforcing its 184-entry limit. Access to the NMEA2000 CAN bus or a compromised device on that network is required; exploitation can crash the daemon and corrupt adjacent heap data.

CVSS severity9.8
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based out-of-bounds write in gpsd before 3.27.1 allows attackers to corrupt memory via a crafted NMEA2000 packet. The hnd_129540 handler trusts the packet's satellite-count byte and uses it to index the fixed-size skyview array without enforcing its 184-entry limit. Access to the NMEA2000 CAN bus or a compromised device on that network is required; exploitation can crash the daemon and corrupt adjacent heap data.

The record

CVE
CVE-2025-67268
Published
Jan 2, 2026
Updated
Jan 2, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1285, CWE-122
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5redhat-SADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1285Improper Validation of Specified Index, Position, or Offset in Input
CWE-122Heap-based Buffer Overflow

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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