Tuesday, July 21, 2026 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

Remote code execution and authentication bypass flaws in internet-facing web applications dominated Monday's disclosures, with Joomla extensions, FreeRDP, xrdp, and Piwigo among the most exposed products. The brief covers 20 critical CVEs (up from 10 the prior day) and 109 high-priority CVEs, a sharp increase from 18 the day before. Two Joomla extensions from dj-extensions.com carry maximum CVSS 10 scores: CVE-2026-61424 in DJ-Classifieds and CVE-2026-61900 in jDownloads, while CVE-2026-64620 in FreeRDP and CVE-2026-41252 in neutrinolabs xrdp expose remote desktop infrastructure at CVSS 9.8. The pattern skews toward content management systems, WordPress and Joomla plugin ecosystems, and remote access services, all commonly reachable from untrusted networks. Six CVEs have confirmed active exploitation, including flaws in Microsoft SharePoint and Fortinet FortiSandbox. No confirmed patch data was available for this set at publication, so verify fix status directly with each vendor before planning remediation windows.

  • Two Joomla extensions from dj-extensions.com (DJ-Classifieds CVE-2026-61424 and jDownloads CVE-2026-61900) rated CVSS 10, the highest scores in this brief
  • 20 critical CVEs (CVSS 9.0+), double the prior day's 10
  • 109 high-priority CVEs (CVSS 7.0-8.9), up from 18 the prior day
  • Remote code execution and authentication bypass lead the attack patterns, affecting FreeRDP (CVE-2026-64620), xrdp (CVE-2026-41252), Piwigo (CVE-2026-35048), and WWBN AVideo (CVE-2026-64625)
  • Patch availability reported at 0% across this set, so vendor advisories should be checked individually for Joomla, WordPress plugin, and remote desktop components
  • 6 CVEs show confirmed active exploitation, spanning Microsoft SharePoint, Microsoft AD FS, Fortinet FortiSandbox, and Oracle Payments

Immediate action: Prioritize internet-facing remote access services (FreeRDP, xrdp) and CMS deployments running Joomla extensions from dj-extensions.com, Piwigo, or affected WordPress plugins, since these carry CVSS 9.8 to 10 remote code execution and authentication bypass flaws. Systems running Microsoft SharePoint, Microsoft AD FS, and Fortinet FortiSandbox need attention given confirmed exploitation activity. No patch availability was confirmed for this set, so check vendor advisories directly and apply access controls or network restrictions where fixes are not yet published.

How to read this brief

CVSS score (e.g. 9.1) — severity from 0–10. Red marks critical (9+), orange high (7–8.9).

Exploitability — how hard the flaw is to attack, read from the CVSS vector:

  • Network / Adjacent / Local / Physical — how close an attacker must get. Network means reachable over the internet.
  • No / Low / High privileges — the access they need first. No privileges means no login required.
  • No interaction / User interaction — whether a victim has to do something (open a file, click a link). No interaction means fully automatable.

The lower the bar on all three, the easier to exploit at scale — “Network · No privileges · No interaction” is the worst case: hit from anywhere, no credentials, no victim action.

Actively exploited — confirmed under attack in the wild (CISA’s Known Exploited Vulnerabilities catalog). Prioritize these regardless of score.

EPSS · Nth percentile — FIRST.org’s estimated chance a flaw is exploited within 30 days. We flag it only in the top 10% — a statistical signal it’s unusually likely to be targeted, separate from whether attacks are confirmed.

💡 Tip: Swipe CVE cards left to ⭐ star, right to ❌ remove

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