CVE-2021-36723Network attack vector

Private-file disclosure via predictable identifiers

Published Dec 29, 2021 · Updated Sep 16, 2024

Information disclosure in Emuse eServices / eNvoice Production allows remote attackers to read private files via predictable identifiers. File retrieval requests accept enumerable identifiers without verifying requester identity or authorization, allowing sequential requests to retrieve stored files. Network access to the service is sufficient; the public record does not identify which file types or tenant boundaries are exposed.

CVSS severity6.1
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Emuse eServices / eNvoice Production allows remote attackers to read private files via predictable identifiers. File retrieval requests accept enumerable identifiers without verifying requester identity or authorization, allowing sequential requests to retrieve stored files. Network access to the service is sufficient; the public record does not identify which file types or tenant boundaries are exposed.

The record

CVE
CVE-2021-36723
Published
Dec 29, 2021
Updated
Sep 16, 2024
Vendor
Emuse
Product
eServices / eNvoice
Classifications
CWE-359, CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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=Production

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Emuse · eServices / eNvoiceversion=Production

Published CVSS scores

6.1Israel National Cyber DirectorateCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
5.0NISTAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-359Exposure of Private Personal Information to an Unauthorized Actor
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

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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