Daily briefing
October 6, 2026
2 stories · about 2 minutes
Citrix rushes out patches for another NetScaler zero-day as attackers crash appliances
A new flaw in NetScaler's SAML login feature is being exploited to knock appliances offline, weeks after two other zero-days. Admins who just patched have to patch again.
- Citrix released fixes for CVE-2026-88779, a memory overflow flaw in NetScaler ADC and Gateway that attackers have exploited to cause denial of service.
- It only affects appliances set up for SAML single sign-on, as a service provider or identity provider, with Gateway or AAA features.
- CISA added it to its list of known exploited flaws and gave US federal agencies until Wednesday, October 7, to patch.
- Admins who just patched two earlier NetScaler zero-days must upgrade again, and researchers are checking whether the new bug allows code execution.
Why it matters: Attackers are exploiting another Citrix NetScaler zero-day, this time to crash the login gateways that companies use for remote access. Citrix has released fixed versions, and CISA ordered federal agencies to patch by Wednesday. If your organization uses NetScaler with SAML single sign-on, it needs to upgrade again, even if it just patched.
Read the full story →Schneider Electric agrees to buy PTC for $22.6 billion in its biggest deal ever
The French energy and data center giant is buying the Boston design software maker in an all-cash deal, betting that industrial AI needs product design data. Investors weren't convinced.
- Schneider Electric will buy PTC for $205 a share in cash, valuing PTC's equity at about $22.6 billion and its enterprise value at $23.7 billion.
- The price is a 42.3% premium to PTC's last close. It's Schneider's largest acquisition ever.
- Schneider says the deal creates an industrial software and AI platform covering products from design through to maintenance.
- Schneider's shares fell nearly 10% in early Paris trading, while PTC's jumped about 34% before the US market opened, Reuters reports.
Why it matters: Schneider Electric, a key supplier of power and cooling gear for AI data centers, is buying PTC, the maker of CAD and product lifecycle software, for $22.6 billion. It wants to combine design data with its operations software to sell industrial AI from the drawing board to the factory floor. Investors balked at the price, sending Schneider's shares down nearly 10%.
Read the full story →