CVE-2026-86778Network attack vector

Account enumeration via discrepant network responses

Published Sep 30, 2026 · Updated Sep 30, 2026

Observable response discrepancy in Maksisoft MaksiGym 0.5.10 allows remote attackers to enumerate accounts through network responses. The published advisory does not identify the endpoint, request handler, or exact response difference that reveals account existence. No credentials or user interaction are required; the documented consequence is account discovery, not access to account contents.

CVSS severity5.3
Medium
EPSS probability0.24%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable response discrepancy in Maksisoft MaksiGym 0.5.10 allows remote attackers to enumerate accounts through network responses. The published advisory does not identify the endpoint, request handler, or exact response difference that reveals account existence. No credentials or user interaction are required; the documented consequence is account discovery, not access to account contents.

The record

CVE
CVE-2026-86778
Published
Sep 30, 2026
Updated
Sep 30, 2026
Vendor
Maksisoft
Product
MaksiGym
Classifications
CWE-204, CAPEC-575, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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=0.5.10 <0.5.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Maksisoft · MaksiGymversion=0.5.10 <0.5.11

Published CVSS scores

5.3TR-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-204Observable Response Discrepancy
CAPEC-575Account Footprinting
T1087Account Discovery

Public exploit references

No public exploit references are available in this record.

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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