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7.8
HIGH CVSS 3.1
CVE-2025-9300
saitoha libsixel img2sixel encoder.c sixel_debug_print_palette stack-based overflow
Description

A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is identified as 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Applying a patch is advised to resolve this issue.

INFO

Published Date :

Aug. 21, 2025, 1:15 p.m.

Last Modified :

Sept. 12, 2025, 1:08 p.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-9300 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Libsixel_project libsixel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 4.0 MEDIUM [email protected]
Solution
Patch the stack-based buffer overflow in the sixel_debug_print_palette function.
  • Apply the provided patch to the libsixel source code.
  • Update the libsixel library to a patched version.
  • Recompile and deploy the application using the updated library.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-9300.

URL Resource
https://drive.google.com/file/d/1IIvvRFgUQZcySqeoqXXhsxd0HZCjClJ7/view?usp=sharing Exploit
https://github.com/saitoha/libsixel/commit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1 Patch
https://github.com/saitoha/libsixel/issues/200 Exploit Issue Tracking
https://github.com/saitoha/libsixel/issues/200#issuecomment-3178785635 Exploit Issue Tracking
https://vuldb.com/?ctiid.320905 Permissions Required VDB Entry
https://vuldb.com/?id.320905 Third Party Advisory VDB Entry
https://vuldb.com/?submit.632366 Exploit Third Party Advisory VDB Entry
https://github.com/saitoha/libsixel/commit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1 Patch
https://github.com/saitoha/libsixel/issues/200 Exploit Issue Tracking
https://github.com/saitoha/libsixel/issues/200#issuecomment-3178785635 Exploit Issue Tracking
https://vuldb.com/?submit.632366 Exploit Third Party Advisory VDB Entry
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-9300 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-9300 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-9300 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-9300 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 12, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-787
    Added CPE Configuration OR *cpe:2.3:a:libsixel_project:libsixel:*:*:*:*:*:*:*:* versions up to (including) 1.10.3
    Added Reference Type VulDB: https://drive.google.com/file/d/1IIvvRFgUQZcySqeoqXXhsxd0HZCjClJ7/view?usp=sharing Types: Exploit
    Added Reference Type CISA-ADP: https://github.com/saitoha/libsixel/commit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1 Types: Patch
    Added Reference Type VulDB: https://github.com/saitoha/libsixel/commit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1 Types: Patch
    Added Reference Type CISA-ADP: https://github.com/saitoha/libsixel/issues/200 Types: Exploit, Issue Tracking
    Added Reference Type VulDB: https://github.com/saitoha/libsixel/issues/200 Types: Exploit, Issue Tracking
    Added Reference Type CISA-ADP: https://github.com/saitoha/libsixel/issues/200#issuecomment-3178785635 Types: Exploit, Issue Tracking
    Added Reference Type VulDB: https://github.com/saitoha/libsixel/issues/200#issuecomment-3178785635 Types: Exploit, Issue Tracking
    Added Reference Type VulDB: https://vuldb.com/?ctiid.320905 Types: Permissions Required, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?id.320905 Types: Third Party Advisory, VDB Entry
    Added Reference Type CISA-ADP: https://vuldb.com/?submit.632366 Types: Exploit, Third Party Advisory, VDB Entry
    Added Reference Type VulDB: https://vuldb.com/?submit.632366 Types: Exploit, Third Party Advisory, VDB Entry
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 21, 2025

    Action Type Old Value New Value
    Added Reference https://github.com/saitoha/libsixel/commit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1
    Added Reference https://github.com/saitoha/libsixel/issues/200
    Added Reference https://github.com/saitoha/libsixel/issues/200#issuecomment-3178785635
    Added Reference https://vuldb.com/?submit.632366
  • New CVE Received by [email protected]

    Aug. 21, 2025

    Action Type Old Value New Value
    Added Description A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is identified as 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Applying a patch is advised to resolve this issue.
    Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
    Added CVSS V2 (AV:L/AC:L/Au:S/C:P/I:P/A:P)
    Added CWE CWE-119
    Added CWE CWE-121
    Added Reference https://drive.google.com/file/d/1IIvvRFgUQZcySqeoqXXhsxd0HZCjClJ7/view?usp=sharing
    Added Reference https://github.com/saitoha/libsixel/commit/316c086e79d66b62c0c4bc66229ee894e4fdb7d1
    Added Reference https://github.com/saitoha/libsixel/issues/200
    Added Reference https://github.com/saitoha/libsixel/issues/200#issuecomment-3178785635
    Added Reference https://vuldb.com/?ctiid.320905
    Added Reference https://vuldb.com/?id.320905
    Added Reference https://vuldb.com/?submit.632366
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 4.8
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 4.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact