CVE-2025-27850Network attack vector

Arbitrary file disclosure via uploaded symlinks

Published May 13, 2026 · Updated May 13, 2026

Link following in Garmin WDU v1 1.4.6 and v2 5.0 allows remote attackers to read arbitrary device files via a graphics package. The locally served website follows symbolic links embedded in an uploaded graphics package without confining their targets to the content directory. Network access to the WDU and the ability to upload such a package expose any file readable by the web server.

CVSS severity7.5
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Link following in Garmin WDU v1 1.4.6 and v2 5.0 allows remote attackers to read arbitrary device files via a graphics package. The locally served website follows symbolic links embedded in an uploaded graphics package without confining their targets to the content directory. Network access to the WDU and the ability to upload such a package expose any file readable by the web server.

The record

CVE
CVE-2025-27850
Published
May 13, 2026
Updated
May 13, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-59, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 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

7.5CISA-ADPCVSS: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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
T1005Data from Local System

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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