CVE-2024-56732
HarfBuzz heap-buffer-overflow on hb_cairo_glyphs_from_buffer
Description
HarfBuzz is a text shaping engine. Starting with 8.5.0 through 10.0.1, there is a heap-based buffer overflow in the hb_cairo_glyphs_from_buffer function.
INFO
Published Date :
Dec. 27, 2024, 8:15 p.m.
Last Modified :
June 25, 2026, 3:32 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update the affected packages.
- If using dnf, run 'dnf update harfbuzz'.
Public PoC/Exploit Available at Github
CVE-2024-56732 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2024-56732.
| URL | Resource |
|---|---|
| https://github.com/harfbuzz/harfbuzz/commit/1767f99e2e2196c3fcae27db6d8b60098d3f6d26 | Patch |
| https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-qmp9-xqm5-jh6m | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-56732 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-2024-56732
weaknesses.
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).
Pure C# HTML/CSS-to-PDF rendering engine. Apache-2.0.
csharp css dotnet html-to-pdf paged-media pdf pdf-generation
C# HTML Shell Dockerfile Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-56732 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-56732 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]
Jun. 25, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:harfbuzz_project:harfbuzz:*:*:*:*:*:*:*:* versions from (including) 8.5.0 up to (including) 10.0.1 Added Reference Type GitHub, Inc.: https://github.com/harfbuzz/harfbuzz/commit/1767f99e2e2196c3fcae27db6d8b60098d3f6d26 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-qmp9-xqm5-jh6m Types: Exploit, Vendor Advisory -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'harfbuzz', 'product': 'harfbuzz', 'versions': [{'status': 'affected', 'version': '>= 8.5.0, <= 10.0.1'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2024-56732', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2024-12-28T16:46:53.686962Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Dec. 28, 2024
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H -
New CVE Received by [email protected]
Dec. 27, 2024
Action Type Old Value New Value Added Description HarfBuzz is a text shaping engine. Starting with 8.5.0 through 10.0.1, there is a heap-based buffer overflow in the hb_cairo_glyphs_from_buffer function. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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 CWE CWE-122 Added Reference https://github.com/harfbuzz/harfbuzz/commit/1767f99e2e2196c3fcae27db6d8b60098d3f6d26 Added Reference https://github.com/harfbuzz/harfbuzz/security/advisories/GHSA-qmp9-xqm5-jh6m