CVE-2026-25658

Service degradation via missing-value message crashes

Published Jun 5, 2026 · Updated Jun 5, 2026

Improper missing-value handling in Ericsson Packet Core Gateway before 1.30 allows remote attackers to degrade service via crafted messages. Ericsson has not disclosed the affected parser or message field; the published detail establishes only that missing values in specially crafted messages trigger crashes. Unauthenticated adjacent-network access and a continuous message stream are required, and the gateway recovers after the attack stops.

CVSS severity7.1
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper missing-value handling in Ericsson Packet Core Gateway before 1.30 allows remote attackers to degrade service via crafted messages. Ericsson has not disclosed the affected parser or message field; the published detail establishes only that missing values in specially crafted messages trigger crashes. Unauthenticated adjacent-network access and a continuous message stream are required, and the gateway recovers after the attack stops.

The record

CVE
CVE-2026-25658
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
Ericsson
Product
Packet Core Gateway
Classifications
CWE-230, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 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=0 <1.30 changes=[{"at":"1.30","status":"unaffected"}]

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Ericsson · Packet Core Gatewayversion=0 <1.30 changes=[{"at":"1.30","status":"unaffected"}]

Published CVSS scores

7.1EricssonCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-230Improper Handling of Missing Values
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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