CVE-2026-120752

Description

PyMuPDF 1.25.3 before 2.0 contains a stack-based buffer overflow vulnerability in JM_set_annot_callout_line() that copies a caller-supplied number of callout points into a fixed three-element stack array. Attackers who control the callout argument passed to Page.add_freetext_annot() can supply four or more points to overwrite the stack frame, crashing the process or executing code.

Overview

State: PUBLISHED
Assigner (CNA): VulnCheck
CVSS severity: HIGH
CVSS score: 7.7 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Effective score: 7.7 / 10 HIGH source: CNA overview
CWE(s): CWE-121
Reserved: 2026-11-02
Published: 2026-11-02 22:16 UTC
Last updated: 2026-11-02 22:16 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120752.json
Linked Threat: CVE-2026-120752 — PyMuPDF 1.25.3 before 2.0 Stack Buffer Overflow via add_freetext_annot() Callout

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-115640

EUVD enrichment is queued; refresh the page in a few seconds.

Affected products (1)

Vendor	Product	Versions	Platforms
PyMuPDF	PyMuPDF	`1.25.3` (affected)	—

Vendor references (7)

References embedded in the original CVE record by the assigning CNA.

GitHub Issue #5112 issue-tracking
GitHub Issue #5173 issue-trackingtechnical-description
Patch Commit patch
https://github.com/pymupdf/PyMuPDF/blob/1.28.2/src/extra.i#L787-L797 technical-description
PyMuPDF 2.0 Release Notes release-notes
https://github.com/pymupdf/PyMuPDF product
VulnCheck Advisory: PyMuPDF 1.25.3 before 2.0 Stack Buffer Overflow via add_freetext_annot() Callout third-party-advisory

MITRE references (7) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://github.com/pymupdf/PyMuPDF product
https://github.com/pymupdf/PyMuPDF/blob/1.28.2/src/extra.i#L787-L797 technical-description
Patch Commit patch
GitHub Issue #5112 issue-tracking
GitHub Issue #5173 issue-tracking, technical-description
PyMuPDF 2.0 Release Notes release-notes
VulnCheck Advisory: PyMuPDF 1.25.3 before 2.0 Stack Buffer Overflow via add_freetext_annot() Callout third-party-advisory

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

October 2026 Patch Tuesday...here we go again! - Spiceworks Community

web:community.spiceworks.com

Another record-breaking patch cycle…1408 CVE's , .NET 8 and 9 reach EOS next month (start planning, if you're not already) Microsoft Publisher starts vanishing and place your bets now, on how much breaks between now and next month!

2026-11-03 11:19 UTC
Patch Notes Version 2.04.02 (All Platforms Hotfix)

web:crimsondesert.pearlabyss.com

Fellow Greymanes, Here are the fixes and improvements that have been added this patch . Update ScheduleThe patch is rolling out across all platforms. Please refer to the Update section below to see the state of the patch for each platform. UpdateSteam (PC): Patch available now Steam (Mac): Patch ...

2026-11-03 11:19 UTC
Pennsylvania Access To Criminal History - Home - pa

web:epatch.pa.gov

Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...

2026-11-03 11:19 UTC
Cisco Meraki Security Hardening Release: October 2026

web:sec.cloudapps.cisco.com

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. These vulnerabilities were found during internal testing and are not known to be actively exploited. To assist customers in patching ...

2026-11-03 11:19 UTC
ArcGIS Server Security 2026 Update 3 Patch - Esri Support

web:support.esri.com

This patch deals specifically with the issues listed below under Issues addressed with this patch . As part of the patch installation, the ArcGIS Server service is stopped and restarted. The restart may take several minutes depending on the number of services published on the ArcGIS Server site. This patch can be uninstalled as outlined in the Uninstalling this patch on Windows and Uninstalling ...

2026-11-03 11:19 UTC
Microsoft Confirms October 2026 Patch Tuesday Breaks Wi-Fi and VPN

web:windowsreport.com

Microsoft has confirmed that the October 2026 Patch Tuesday updates can cause authentication failures on some Wi-Fi, Ethernet, and VPN connections. The problem stems from Microsoft's decision to enforce restrictions on legacy NTLMv1 authentication by default. According to Microsoft's ...

2026-11-03 11:19 UTC
CVE: Common Vulnerabilities and Exposures

web:www.cve.org

At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

2026-11-03 11:19 UTC
Patch 2.5 Notes for Modders (Unofficial Fix Retired)

web:www.nexusmods.com

Retired: the official 2.5 updates of RED4ext, ArchiveXL, TweakXL and Codeware are out, so use those. Still here: technical notes for mod authors on what patch 2.5 changed for plugins, plus source diff

2026-11-03 11:19 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-11-03 11:19 UTC
KB4951: Vulnerabilities Resolved in Veeam ONE 13.1 Patch 1

web:www.veeam.com

Vulnerabilities Resolved in Veeam ONE 13.1 Patch 1 Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program (VDP) for all Veeam products and perform extensive internal code audits. When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line ...

2026-11-03 11:19 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120752.json.

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            {
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              "status": "affected",
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        }
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