CVE-2026-51598Public exploit

RTSP access interruption via malformed DESCRIBE URL

Published Jul 9, 2026 · Updated Jul 9, 2026

Improper input validation in the MERCURY MIPC252W RTSP service 1.0.5 Build 230306 Rel.79931n allows remote attackers to interrupt RTSP access. The parser passes a malformed DESCRIBE request-line URL into authentication logic, corrupting RTSP state and counting the request as a failed login. The attacker must reach TCP port 554 on an adjacent network; about three sequences lock out that source IP for roughly 40 minutes to several hours, while other source IPs remain unaffected.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in the MERCURY MIPC252W RTSP service 1.0.5 Build 230306 Rel.79931n allows remote attackers to interrupt RTSP access. The parser passes a malformed DESCRIBE request-line URL into authentication logic, corrupting RTSP state and counting the request as a failed login. The attacker must reach TCP port 554 on an adjacent network; about three sequences lock out that source IP for roughly 40 minutes to several hours, while other source IPs remain unaffected.

The record

CVE
CVE-2026-51598
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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 vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

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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