CVE•Published 2025-02-25•Modified 2026-04-06•0 articles on news•6 live references•NVD data

CVE-2025-26599Tigervnc · Tigervnc

Vulnerability data via NVD (ingested)

CVSS v3.1

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-824Access of Uninitialized Pointer

Description

An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later.

Timeline

Published 2025-02-25

Modified 2026-04-06

External references

NVD MITRE Exploit-DB Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2025-26599

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Tigervnc Tigervnc"

All exposed Tigervnc Tigervnc instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Tigervnc"

HTTP body or banner mentions "Tigervnc" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2025-26599