CVE-2025-27661Network attack vector

Unauthenticated session hijacking

Published Mar 5, 2025 · Updated Mar 5, 2025

Session fixation in Vasion Print before Virtual Appliance Host 22.0.843 and Application 20.0.1923 allows remote attackers to hijack user sessions. The vendor and CVE records do not disclose which session-management locus accepts or preserves an attacker-selected session identifier. No account privileges are required, but the public record does not identify how the identifier is fixed or whose authenticated session can be assumed.

CVSS severity9.1
Critical
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session fixation in Vasion Print before Virtual Appliance Host 22.0.843 and Application 20.0.1923 allows remote attackers to hijack user sessions. The vendor and CVE records do not disclose which session-management locus accepts or preserves an attacker-selected session identifier. No account privileges are required, but the public record does not identify how the identifier is fixed or whose authenticated session can be assumed.

The record

CVE
CVE-2025-27661
Published
Mar 5, 2025
Updated
Mar 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-384, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record 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

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-384Session Fixation
T1550.004Web Session Cookie

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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