CVE•Published 2020-04-12•Modified 2026-04-24•0 articles on news•6 live references•NVD data

CVE-2020-11721Saitoha · Libsixel

Vulnerability data via NVD (ingested)

CVSS v3.1

6.5

MEDIUM

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

EPSS percentile

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Weaknesses (CWE)

CWE-824Access of Uninitialized Pointer

Description

load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service.

Timeline

Published 2020-04-12

Modified 2026-04-24

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-2020-11721

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product + version

product:"Saitoha Libsixel" version:"1.8.6"

Version-pinned fingerprint from NVD's first vulnerable CPE.

Shodan · banner/body mention

http.html:"Libsixel"

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

More intel sources (5)

Shodan report

vuln:CVE-2020-11721