Just a week after it issued its usual raft of Patch Tuesday updates Adobe pushed out fixes for nearly 50 vulnerabilities, including a rash of critical bugs, on Monday.

Among the patches were fixes for 24 vulnerabilities in Acrobat and Reader that could have led to arbitrary code execution. While most were use-after-free vulnerabilities the bugs ran the gamut and also included heap overflow vulnerabilities, a type confusion, an untrusted pointer dereference, an out-of-bounds write and a double free vulnerability.

Roughly just as many vulnerabilities - 23 - branded “important” in the family of application software and web services were also fixed.

Researchers from a variety of firms, including Check Point Software Technologies, Kaspersky Lab, ESET, and Microsoft, discovered the vulnerabilities. While none of the issues were brought to light at Pwn2Own, an annual hacking competition held each year in Vancouver, the bulk of the bugs were unearthed via the sponsor of the event, Trend Micro's Zero Day Initiative, a group that works with vendors to responsibly disclose vulnerabilities.