CVE-2025-59873Network attack vector

Session hijacking via URL-exposed authentication tokens

Published Feb 23, 2026 · Updated Feb 23, 2026

Information exposure in HCL Software ZIE for Web 16 allows remote attackers to hijack user sessions through leaked URL tokens. ZIE for Web places sensitive session tokens and authentication identifiers in URL query parameters, exposing them to network logging and referrer transmission. Exploitation requires a victim to follow a linked site or an attacker to obtain a network log; the stolen values permit actions in the victim's session.

CVSS severity5.9
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in HCL Software ZIE for Web 16 allows remote attackers to hijack user sessions through leaked URL tokens. ZIE for Web places sensitive session tokens and authentication identifiers in URL query parameters, exposing them to network logging and referrer transmission. Exploitation requires a victim to follow a linked site or an attacker to obtain a network log; the stolen values permit actions in the victim's session.

The record

CVE
CVE-2025-59873
Published
Feb 23, 2026
Updated
Feb 23, 2026
Vendor
HCL Software
Product
ZIE for Web
Classifications
CWE-598, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 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=v16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HCL Software · ZIE for Webversion=v16

Published CVSS scores

5.9HCL SoftwareCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/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.

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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-598Use of GET Request Method With Sensitive Query Strings
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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