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ZDI-26-660: Adobe Acrobat Reader DC Font Parsing Use-After-Free Information Disclosure Vulnerability

ZDI discloses CVE-2026-80162, a font-parsing use-after-free in Adobe Acrobat Reader DC enabling limited sensitive information disclosure with CVSS 3.3.

The Zero Day Initiative published ZDI-26-660 covering a use-after-free vulnerability in Adobe Acrobat Reader DC's font parsing. Successful exploitation allows disclosure of sensitive information and requires user interaction, such as opening a malicious file or visiting a malicious page. ZDI rated the issue CVSS 3.3 and tracked it as CVE-2026-80162.

ZDI-26-600: Foxit PDF Reader Annotation Use-After-Free Information Disclosure Vulnerability

Foxit PDF Reader annotation use-after-free (CVE-2026-57237, CVSS 3.3) can disclose sensitive information when users open malicious PDFs.

ZDI-26-600 documents a use-after-free in Foxit PDF Reader annotation handling that allows remote information disclosure, tracked as CVE-2026-57237 with CVSS 3.3. Exploitation requires user interaction such as opening a malicious file or visiting a malicious page. The advisory was published by the Zero Day Initiative on August 24, 2026.

ZDI-26-601: Foxit PDF Reader Annotation Use-After-Free Information Disclosure Vulnerability

Foxit PDF Reader has a use-after-free vulnerability (CVE-2026-13129, CVSS 3.3) allowing sensitive information disclosure when a user opens malicious content.

ZDI-26-601 describes a use-after-free vulnerability in the annotation feature of Foxit PDF Reader, tracked as CVE-2026-13129 with a CVSS score of 3.3. Successful exploitation allows remote attackers to disclose sensitive information, but requires user interaction such as visiting a malicious page or opening a malicious file. The advisory does not mention any exploitation in the wild.

ZDI-26-603: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability

Foxit PDF Reader has a second annotation use-after-free vulnerability (CVE-2026-13127, CVSS 7.8) allowing remote code execution via malicious files or pages.

ZDI-26-603 describes a use-after-free vulnerability in the annotation feature of Foxit PDF Reader, tracked as CVE-2026-13127 with a CVSS score of 7.8. Successful exploitation allows remote attackers to execute arbitrary code, but requires user interaction such as visiting a malicious page or opening a malicious file. The advisory does not mention any exploitation in the wild.

ZDI-26-604: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability

Foxit PDF Reader use-after-free flaw (CVE-2026-13126) allows remote code execution when users open malicious files; CVSS 7.8 per ZDI advisory.

ZDI-26-604 describes a use-after-free vulnerability in Foxit PDF Reader's annotation handling, tracked as CVE-2026-13126 and rated CVSS 7.8. Exploitation requires user interaction, with the target visiting a malicious page or opening a malicious file, and allows remote attackers to execute arbitrary code. The advisory was published by the Zero Day Initiative on August 24, 2026.

ZDI-26-596: Foxit PDF Reader PDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

Foxit PDF Reader out-of-bounds read in PDF parsing (CVE-2026-57253, CVSS 3.3) can leak sensitive information via malicious files.

ZDI-26-596 covers an out-of-bounds read in Foxit PDF Reader's PDF file parsing, tracked as CVE-2026-57253 and rated CVSS 3.3. Successful exploitation allows remote attackers to disclose sensitive information and requires the target to open a malicious file or page. The advisory was published by the Zero Day Initiative on August 24, 2026.

ZDI-26-597: Foxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability

Foxit PDF Reader has a use-after-free vulnerability (CVE-2026-57252, CVSS 7.8) allowing remote code execution via malicious AcroForm content.

ZDI-26-597 describes a use-after-free vulnerability in the AcroForm feature of Foxit PDF Reader, tracked as CVE-2026-57252 with a CVSS score of 7.8. Successful exploitation allows remote attackers to execute arbitrary code, but requires user interaction such as visiting a malicious page or opening a malicious file. The advisory does not mention any exploitation in the wild.

ZDI-26-595: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability

Foxit PDF Reader has a use-after-free vulnerability (CVE-2026-57254, CVSS 7.8) allowing remote code execution when a user opens a malicious file or page.

ZDI-26-595 describes a use-after-free vulnerability in the annotation feature of Foxit PDF Reader, tracked as CVE-2026-57254 with a CVSS score of 7.8. Successful exploitation allows remote attackers to execute arbitrary code, but requires user interaction such as visiting a malicious page or opening a malicious file. The advisory does not mention any exploitation in the wild.

ZDI-26-602: Foxit PDF Reader Doc Object Use-After-Free Remote Code Execution Vulnerability

ZDI disclosed a use-after-free in Foxit PDF Reader (CVE-2026-13128) enabling remote code execution when a user opens a malicious file.

Zero Day Initiative advisory ZDI-26-602 describes a use-after-free flaw in Foxit PDF Reader's document object handling. Exploitation yields arbitrary code execution but requires the target to open a malicious page or file. ZDI assigned CVSS 7.8 and CVE-2026-13128. The advisory does not report active exploitation.

ZDI-26-598: Foxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability

Foxit PDF Reader AcroForm use-after-free (CVE-2026-57242, CVSS 7.8) permits remote code execution through malicious PDF files or pages.

ZDI-26-598 details a use-after-free in the AcroForm component of Foxit PDF Reader, tracked as CVE-2026-57242 and rated CVSS 7.8. A remote attacker can execute arbitrary code if the target opens a malicious file or visits a malicious page. The advisory was published by the Zero Day Initiative on August 24, 2026.

ZDI-26-599: Foxit PDF Reader Annotation Use-After-Free Information Disclosure Vulnerability

ZDI published advisory ZDI-26-599 for a use-after-free information disclosure flaw (CVE-2026-57238, CVSS 3.3) in Foxit PDF Reader requiring user interaction.

The Zero Day Initiative released advisory ZDI-26-599 describing a use-after-free vulnerability in Foxit PDF Reader's annotation handling. The flaw allows remote attackers to disclose sensitive information when a target opens a malicious file or visits a malicious page. ZDI rated the issue CVSS 3.3 and assigned CVE-2026-57238.

Phishing Attacks Serve Browser-in-the-Browser Pages, Rogue RMM Persistence

Phishing emails with browser-in-the-browser fake Adobe pages trick users into installing rogue ScreenConnect clients granting persistent remote access.

Huntress SOC investigated two August incidents where phishing links led to fake CAPTCHA checks and Adobe PDF Reader lures rendered as browser-in-the-browser (BiTB) pages spoofing legitimate domains like get.adobe.com. Victims downloaded what they believed was Acrobat Reader but actually installed ScreenConnect.ClientSetup.exe from attacker infrastructure, yielding two rogue ScreenConnect clients with service-based persistence. The attacker used cmd.exe and curl to stage a second client connecting to 144.172.115.59, leveraged a ScreenConnect Trial Relay domain for stealth, and ran HideCursor.exe as a defense-evasion binary. Incident 2 arrived via AT&T Office@Hand (RingCentral), with both chains stopped before broader impact.

Huntress · 7d agoPhishing & fraud in the wild

ZDI-26-611: (0Day) pdfforge PDF Architect App Object Out-Of-Bounds Read Remote Code Execution Vulnerability

ZDI published ZDI-26-611, an unpatched out-of-bounds read in pdfforge PDF Architect App Object enabling remote code execution (CVSS 7.8).

The Zero Day Initiative disclosed ZDI-26-611, an out-of-bounds read vulnerability in the App Object component of pdfforge PDF Architect that can lead to remote code execution. Exploitation requires user interaction, such as visiting a malicious page or opening a malicious file. ZDI rated the issue 7.8 on the CVSS scale and marks it as a 0day pending a vendor patch.

ZDI Published Advisories · 16d agoAdvisory

ZDI-26-613: (0Day) pdfforge PDF Architect PDF File Parsing Memory Corruption Remote Code Execution Vulnerability

ZDI published ZDI-26-613, an unpatched memory corruption flaw in pdfforge PDF Architect PDF parsing enabling remote code execution (CVSS 7.8).

The Zero Day Initiative disclosed ZDI-26-613, a memory corruption vulnerability in pdfforge PDF Architect's PDF file parsing that allows remote code execution on affected installations. User interaction is required, meaning the target must visit a malicious page or open a malicious file. ZDI assigned a CVSS score of 7.8 and classifies the issue as a 0day.

ZDI Published Advisories · 16d agoAdvisory

ClickFix Campaigns Abuse Legitimate Services for Persistent Access

Dark Reading reports two ClickFix social engineering campaigns abusing legitimate services to compromise organizations and maintain persistent access.

Dark Reading describes two separate attacks in which threat actors used the ClickFix social engineering tactic to compromise organizations. The campaigns abuse legitimate, trusted services to gain and maintain persistent access to victim environments. No specific victims, actors, or indicators were named in the available text.

Dark Reading · 8d agoThreat actor in the wild

Linux Zoom Client Proactively Reads X11 Clipboard

Simon Tatham reports that Zoom's Linux client proactively reads the X11 clipboard, potentially exposing copied passwords and other sensitive data.

A Mastodon post by Simon Tatham, shared via Lobsters, reports that the Linux Zoom client proactively reads the X11 system clipboard rather than accessing it only on explicit paste. Because X11 allows any running application to query clipboard contents, secrets such as copied passwords or tokens may be captured by the app. The observation highlights the broader privacy gap between X11's unrestricted clipboard access and more restricted display servers like Wayland.

Lobsters · security · 4d agoResearch1

ZDI-26-614: (0Day) pdfforge PDF Architect PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI published ZDI-26-614, another unpatched out-of-bounds write in pdfforge PDF Architect PDF parsing enabling remote code execution (CVSS 7.8).

The Zero Day Initiative published ZDI-26-614, a second out-of-bounds write vulnerability in pdfforge PDF Architect's PDF file parsing. Attackers can execute arbitrary code on affected installations, provided the user visits a malicious page or opens a malicious file. The flaw carries a ZDI-assigned CVSS score of 7.8 and remains unpatched (0day).

ZDI Published Advisories · 16d agoAdvisory

Heap overflow in kernel driver due to missing size validation

Fortinet fixes a CVSS 7.3 heap overflow in the FortiClient Windows kernel driver enabling code execution via crafted DNS responses.

Fortinet PSIRT advisory FG-IR-26-156, revised 2026-08-12, describes a heap-based buffer overflow (CWE-120, buffer copy without checking input size) in the FortiClient Windows kernel driver, scored CVSSv3 7.3. An unauthenticated attacker positioned to alter or craft DNS responses for a targeted host could execute arbitrary code via malicious packets. No CVE identifier or exploitation status is provided in the advisory text, so administrators should check the full bulletin for affected versions and fixed releases.

Fortinet PSIRT · Aug 12, 2026Advisory

ZDI-26-612: (0Day) pdfforge PDF Architect PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI published ZDI-26-612, an unpatched out-of-bounds write in pdfforge PDF Architect PDF parsing enabling remote code execution (CVSS 7.8).

The Zero Day Initiative disclosed ZDI-26-612, an out-of-bounds write vulnerability in pdfforge PDF Architect's PDF file parsing. Successful exploitation allows remote code execution on affected installations. User interaction is required, as the target must visit a malicious page or open a malicious file; ZDI assigned a CVSS score of 7.8 and lists the flaw as a 0day.

ZDI Published Advisories · 16d agoAdvisory

Fortinet Patches Critical Vulnerabilities in FortiMonitorOnSight, Chrome Extension

Fortinet patched 10 vulnerabilities including two critical authentication flaws, CVE-2026-84390 (CVSS 9.6) and CVE-2026-84388 (CVSS 9.1), in FortiMonitorOnSight and the FortiPAM Chrome extension.

Fortinet's September patch release fixes CVE-2026-84390, a sensitive-information issue in the FortiMonitorOnSight web portal that lets unauthenticated attackers bypass authentication with forged or reused JWTs. CVE-2026-84388 is an improper authentication flaw in the Fortinet Privileged Access Agent Chrome extension that can allow attackers to proxy a user's browser traffic via a malicious website, requiring upgrades to both FortiPAM 1.9.1/1.8.4 and extension 8.0.1.123+. High-severity information disclosure in FortiSandbox (CVE-2026-26084) and man-in-the-middle risk in the FortiOS/FortiProxy Agentless ZTNA portal (CVE-2026-84393) were also fixed, alongside medium/low issues across FortiManager, FortiAnalyzer, FortiSOAR, FortiClient, FortiSIEM and others. Fortinet did not indicate any of the flaws are being exploited in the wild.

ZDI-26-615: (0Day) pdfforge PDF Architect activation-service Update Service Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

Zero Day Initiative disclosed an uncontrolled search path flaw in pdfforge PDF Architect's update service, allowing local privilege escalation (CVSS 7.8).

ZDI published advisory ZDI-26-615 describing a local privilege escalation vulnerability in the activation-service Update Service of pdfforge PDF Architect. An uncontrolled search path element lets local attackers escalate privileges, but they must first be able to execute low-privileged code on the target. ZDI rated the issue 7.8 and tagged it as a 0-day disclosure.

ZDI Published Advisories · 16d agoVulnerability

HTTP/2 Bomb CVE-2026-49975

Fortinet advisory details CVE-2026-49975, an Apache HTTP Server HTTP/2 flaw enabling denial of service, affecting versions 2.4.17 through 2.4.67.

Fortinet PSIRT advisory FG-IR-26-163, revised 2026-08-19, covers CVE-2026-49975, a memory allocation with excessive size value flaw (HTTP/2 bomb) in Apache HTTP Server's mod_http2, scored CVSSv3 5.8. Malicious HTTP requests can cause a denial of service, and affected versions span Apache HTTP Server 2.4.17 through 2.4.67. The advisory text does not state which Fortinet product bundles the affected Apache component or whether exploitation has been observed.

Fortinet PSIRT · Aug 12, 2026AdvisoryCVE-2026-49975

VU#614868: OpenCart ecommerce platform contains directory traversal vulnerability

OpenCart 4.2.0.0 extension installer fails to validate zip extraction paths, allowing directory traversal (CVE-2026-18412) to write files outside intended directories.

CERT/CC VU#614868 discloses CVE-2026-18412, a directory traversal vulnerability in OpenCart v4.2.0.0's extension installer. The installer extracts uploaded .ocmod.zip files using zip entry filenames as filesystem paths without verifying the resolved path stays inside the intended directory. A malicious extension zip could result in arbitrary file writes outside the target directory.

CERT/CC Vulnerability Notes · Aug 10, 2026VulnerabilityCVE-2026-184121