CVE-2026-37198Public exploitNetwork attack vector

Service crash via crafted GTP packet

Published Aug 27, 2026 · Updated Aug 27, 2026

Integer overflow in the Open5GS 2.7.6 SMF allows remote attackers to crash the service with a crafted GTP packet. The CVE record does not identify the overflowing calculation; its upstream references instead document insufficient validation of GTP version and Bearer Context fields before parsing. Network access to the SMF GTP control-plane interface is required, and successful exploitation terminates the SMF process rather than altering subscriber data.

CVSS severityUnavailable
Unscored
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the Open5GS 2.7.6 SMF allows remote attackers to crash the service with a crafted GTP packet. The CVE record does not identify the overflowing calculation; its upstream references instead document insufficient validation of GTP version and Bearer Context fields before parsing. Network access to the SMF GTP control-plane interface is required, and successful exploitation terminates the SMF process rather than altering subscriber data.

The record

CVE
CVE-2026-37198
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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

No CVSS assessment is available in this record.

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-190Integer Overflow or Wraparound
T1499Endpoint Denial of Service

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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