CVE-2025-50976Public exploitNetwork attack vector

Reflected script execution via unescaped DNS parameters

Published Aug 26, 2025 · Updated Aug 27, 2025

Reflected XSS in IPFire 2.29 dns.cgi allows remote attackers to execute script in an administrator's browser through a crafted request. The handler renders NAMESERVER, REMARK, and TLS_HOSTNAME values in the DNS form without neutralizing HTML metacharacters. A victim must open the crafted request; injected script then runs in the trusted interface origin and can read or change browser-accessible data.

CVSS severity6.1
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

Reflected XSS in IPFire 2.29 dns.cgi allows remote attackers to execute script in an administrator's browser through a crafted request. The handler renders NAMESERVER, REMARK, and TLS_HOSTNAME values in the DNS form without neutralizing HTML metacharacters. A victim must open the crafted request; injected script then runs in the trusted interface origin and can read or change browser-accessible data.

The record

CVE
CVE-2025-50976
Published
Aug 26, 2025
Updated
Aug 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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