CVE-2026-33019

Published: Apr 15, 2026 Last Modified: Apr 15, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 7,1

Source: [email protected]

Attack Vector: local

Attack Complexity: low

Privileges Required: none

User Interaction: required

Scope: unchanged

Confidentiality: high

Integrity: none

Availability: high

Description

AI Translation Available

libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain an integer overflow leading to an out-of-bounds heap read in the --crop option handling of img2sixel, where positive coordinates up to INT_MAX are accepted without overflow-safe bounds checking. In sixel_encoder_do_clip(), the expression clip_w + clip_x overflows to a large negative value when clip_x is INT_MAX, causing the bounds guard to be skipped entirely, and the unclamped coordinate is passed through sixel_frame_clip() to clip(), which computes a source pointer far beyond the image buffer and passes it to memmove(). An attacker supplying a specially crafted crop argument with any valid image can trigger an out-of-bounds read in the heap, resulting in a reliable crash and potential information disclosure. This issue has been fixed in version 1.8.7-r1.

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

EPSS Score Trend (Last 2 Days)

125

Out-of-bounds Read

Draft

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Confidentiality Availability Other

Potential Impacts:

Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context

Applicable Platforms

Languages: C, C++, Memory-Unsafe

Technologies: ICS/OT

View CWE Details

190

Integer Overflow or Wraparound

Stable

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Availability Integrity Confidentiality Access Control Other

Potential Impacts:

Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Memory) Dos: Instability Modify Memory Execute Unauthorized Code Or Commands Bypass Protection Mechanism Alter Execution Logic Dos: Resource Consumption (Cpu)