CVE-2025-8260Public exploitNetwork attack vector

Authenticated information disclosure via weak xajaxargs hashing

Published Jul 28, 2025 · Updated Apr 15, 2026

Weak hashing in Vaelsys VaelsysV4 5.0, 5.1, 5.1.0, 5.2, 5.3, and 5.4.0 allows remote authenticated users to read sensitive information. The /grid/vgrid_server.php web interface processes attacker-controlled xajaxargs with a weak hash, but Vaelsys has not published the hash's security role or the data exposed. A valid low-privilege session and a high-complexity request are required; the reported effect is limited to confidentiality.

CVSS severityUnavailable
Unscored
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

Weak hashing in Vaelsys VaelsysV4 5.0, 5.1, 5.1.0, 5.2, 5.3, and 5.4.0 allows remote authenticated users to read sensitive information. The /grid/vgrid_server.php web interface processes attacker-controlled xajaxargs with a weak hash, but Vaelsys has not published the hash's security role or the data exposed. A valid low-privilege session and a high-complexity request are required; the reported effect is limited to confidentiality.

The record

CVE
CVE-2025-8260
Published
Jul 28, 2025
Updated
Apr 15, 2026
Vendor
Vaelsys
Product
VaelsysV4
Classifications
CWE-328, CWE-327
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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=5.0
  2. Affected versionversion=5.1
  3. Affected versionversion=5.1.0
  4. Affected versionversion=5.2
  5. Affected versionversion=5.3
  6. Affected versionversion=5.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Vaelsys · VaelsysV4version=5.0; version=5.1; version=5.1.0; version=5.2; version=5.3; version=5.4.0

Published CVSS scores

3.1VulDBCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
3.1VulDBCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
2.3VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
2.1VulDBAV:N/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-328Use of Weak Hash
CWE-327Use of a Broken or Risky Cryptographic Algorithm

Public exploit references

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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