CVE-2026-39686Network attack vector

Unauthenticated retrieval of embedded sensitive data

Published Apr 8, 2026 · Updated Apr 8, 2026

Sensitive data exposure in BannerSky BSK PDF Manager 3.7.2 and earlier allows remote attackers to retrieve embedded data through network requests. Patchstack has not published the affected endpoint, the embedded data involved, or the faulty operation that exposes it. Access requires no authentication or user interaction, but the published CVSS assessment records no confidentiality impact, leaving the exact consequence unresolved.

CVSS severity5.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive data exposure in BannerSky BSK PDF Manager 3.7.2 and earlier allows remote attackers to retrieve embedded data through network requests. Patchstack has not published the affected endpoint, the embedded data involved, or the faulty operation that exposes it. Access requires no authentication or user interaction, but the published CVSS assessment records no confidentiality impact, leaving the exact consequence unresolved.

The record

CVE
CVE-2026-39686
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
BannerSky
Product
BSK PDF Manager
Classifications
CWE-497, CAPEC-37, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.7.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BannerSky · BSK PDF Managerversion=0 <=3.7.2

Published CVSS scores

5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
CAPEC-37Retrieve Embedded Sensitive Data
T1213Data from Information Repositories

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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