SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-15506

In BubbleUPnP 0.9 update 30, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External Entity Processing (XXE) attack.

CRITICAL 9.8EPSS 4.70%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

In BubbleUPnP 0.9 update 30, the XML parsing engine for SSDP/UPnP functionality is vulnerable to an XML External Entity Processing (XXE) attack. Remote, unauthenticated attackers can use this vulnerability to: (1) Access arbitrary files from the filesystem with the same permission as the user account running BubbleUPnP, (2) Initiate SMB connections to capture a NetNTLM challenge/response and crack the cleartext password, or (3) Initiate SMB connections to relay a NetNTLM challenge/response and achieve Remote Command Execution in Windows domains.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
4.70% probability · 92th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-611
Affected
bubblesoftapps/bubbleupnp
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 4.70%27 October 202627 October 2026

EPSS 4.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.