CVE-2026-23557

Published: Mag 19, 2026 Last Modified: Mag 19, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,5
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

Any guest can cause xenstored to crash by issuing a XS_RESET_WATCHES
command within a transaction due to an assert() triggering.

In case xenstored was built with NDEBUG #defined nothing bad will
happen, as assert() is doing nothing in this case. Note that the
default is not to define NDEBUG for xenstored builds even in release
builds of Xen.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

617

Reachable Assertion

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Crash, Exit, Or Restart
Applicable Platforms
Languages: Not Language-Specific, C, Java, Rust
View CWE Details
Operating System

Xen by Xen

Product Information
Vendor Xen
Product Xen
Version Range Affected
From 4.2.0 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
http://www.openwall.com/lists/oss-security/2026/04/28/11
http://www.openwall.com/lists/oss-security/2026/04/28/11
http://xenbits.xen.org/xsa/advisory-484.html
http://xenbits.xen.org/xsa/advisory-484.html
https://xenbits.xenproject.org/xsa/advisory-484.html
https://xenbits.xenproject.org/xsa/advisory-484.html