Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
7 results
Oct 20, 2026Denial-of-service in the PDF Viewer component.CVE-2026-113401 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 6.5
Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Oct 13, 2026Information disclosure in the PDF Viewer component.CVE-2026-109742 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 4.3
Information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Sep 1, 2026Denial-of-service in the PDF Viewer component.CVE-2026-84138 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 6.5
Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Jul 21, 2026Mitigation bypass in the PDF Viewer component.CVE-2026-16377 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgCritical 9.8
Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Jan 13, 2026Clickjacking issue, information disclosure in the PDF Viewer component.CVE-2026-0887 · Computers, phones & browsers · Mozilla · reported by security@mozilla.orgMedium 4.3
Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
- Product
- Firefox
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.mozilla.orgmozilla.org
Jun 1, 2021Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in PDF Viewer component in Synology DiskStation Manager (DSM) beforCVE-2021-33182 · Network & remote access · Synology · reported by security@synology.comMedium 5
Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in PDF Viewer component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows remote authenticated users to read limited files via unspecified vectors.
- Product
- Synology DiskStation Manager (DSM)
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsynology.comsynology.com
Jun 22, 2009Insecure method vulnerability in the PDFVIEWER.PDFViewerCtrl.1 ActiveX control (pdfviewer.ocx) in Edraw PDF Viewer Component before 3.2.0.126 allows remote attaCVE-2009-2169 · Other software · Edraw · reported by MITREHigh 9.3
Insecure method vulnerability in the PDFVIEWER.PDFViewerCtrl.1 ActiveX control (pdfviewer.ocx) in Edraw PDF Viewer Component before 3.2.0.126 allows remote attackers to create and overwrite arbitrary files via a URL argument to the FtpConnect argument and a target filename argument to the FtpDownloadFile method. NOTE: this can be leveraged for code execution by writing to a Startup folder.
- Product
- PDF Viewer Component
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comsecunia.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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