CVE-2019-19638

An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function load_pnm at frompnm.c, due to an integer overflow.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/saitoha/libsixel/issues/102	Third Party Advisory
https://github.com/saitoha/libsixel/issues/102	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:saitoha:libsixel:1.8.2:*:*:*:*:*:*:*

History

24 Apr 2026, 12:56

Type	Values Removed	Values Added
CPE	cpe:2.3:a:libsixel_project:libsixel:1.8.2:::::::*	cpe:2.3:a:saitoha:libsixel:1.8.2:::::::*
First Time		Saitoha Saitoha libsixel

21 Nov 2024, 04:35

Type	Values Removed	Values Added
References	~~() https://github.com/saitoha/libsixel/issues/102 - Third Party Advisory~~	() https://github.com/saitoha/libsixel/issues/102 - Third Party Advisory

Information

Published : 2019-12-08 03:15

Updated : 2026-04-24 12:56

NVD link : CVE-2019-19638

Mitre link : CVE-2019-19638

CVE.ORG link : CVE-2019-19638

JSON object : View

Products Affected

saitoha

libsixel

CWE

CWE-190

Integer Overflow or Wraparound

CWE-787

Out-of-bounds Write

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