Critical security advisoryCriticalFlagged by our vulnerability database: A flaw in WordPress’s own updater is being exploited. Sites need 7.1.4. See if your site is affectedFlagged by our vulnerability database: WordPress updater flaw is being exploited. DetailsExploited: WordPress 7.1.4. Check your site
HuttenlocherTechnologies
MediumCVSS 6.5Computers, phones & browsers

CVE-2023-0459

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a k

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47

Description from the National Vulnerability Database, published by cve-coordination@google.com

What to do: Apply the vendor’s update. The NVD record links to the advisory.

What it means for a small business

Linux Kernel is on the computers, phones or browsers your team uses every day. Turn on automatic updates and restart: most of these fixes only take effect after a restart.

How likely is an attack? The Exploit Prediction Scoring System, run by FIRST (the global association of security response teams), puts the odds of this one being exploited in the next 30 days at 0.64%, higher than 51% of CVEs. That’s low, but low isn’t zero, and the odds jump the day someone publishes an exploit. Scored November 11, 2026, updated daily.

Check your own setup

  • Website check: reads what your site runs from the outside (WordPress version, plugins it can see, old server software) and matches it against this database.
  • Server check: what your web server says about itself, and whether that version has known flaws.

Part of the Huttenlocher Technologies vulnerability database, refreshed twice a day from CISA and the NVD. The title, category and plain-language guidance are ours; check the linked record before acting on a detail. This is general guidance, not a review of your systems.

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