Microsoft's latest Patch Tuesday is intended to secure several vulnerabilities which the company said are not currently being exploited in the wild.
This will almost certainly change very quickly, however, following the release of 13 security bulletins which will have hit UK users' Windows PCs this morning.
"March Patch Tuesday has a great deal of updates, but no public disclosures or exploited vulnerabilities as yet," said Chris Goettl, product manager at security company Shavlik.
"Let's start with what we know for sure: Microsoft has released 13 bulletins, five of which are 'critical' and eight 'important'. With these bulletins, Microsoft is resolving 39 vulnerabilities this month.
"On the non-Microsoft front, Adobe is releasing two bulletins, rated as Priority 2 and 3, that resolve four vulnerabilities. Additionally, Mozilla Firefox 45 has been released and is rated 'critical' as it resolves 22 vulnerabilities."
Goettl is not the only one quick off the mark with advice. Qualys CTO Wolfgang Kandek said in a blog post that Apple joins the party with a fix for the Transmission bug, and that Microsoft and Adobe are providing fixes for yet more PDF flaws.
There are no exploits for these security flaws currently known about in the wild, but they will inevitably arrive soon.
"Apple has a first this month. The popular bit-torrent client Transmission was trojaned with a ransomware version. Fortunately, it was available for download for less than 12 hours and Apple quickly revoked its signing certificate and updated the signatures in xprotect. Nevertheless, check for Transmission 2.90 in your network and isolate it if found," said Kandek.
"That's it for March. No zero-days or immediately exploitable vulnerabilities this month, but apply these patches as quickly as possible anyway. We have seen attackers convert vulnerabilities into exploits quickly, particularly on Adobe Flash."
Adobe has issued a new version of Acrobat Reader with three critical fixes which Kandek reckons you should consider a priority.
To hear more about security challenges, the threats they pose and how to combat them, sign up for V3 sister site Computing's Enterprise Security and Risk Management conference taking place in November. Attendance is free for qualifying end-users, so sign up early.
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