New privilege escalation exploit discovered in OS X Yosemite, also affects just-released 10.10.5
Just days after patching the DYLD_PRINT_TO_FILE vulnerability with a new OS X point release, Apple's desktop operating system has been hit with yet another zero-day exploit that would allow …
Context & Ripple Effects
2015 has been a bruising stretch for OS X security. In January, Google's Project Zero disclosed three local vulnerabilities whose fixes existed only in Yosemite's beta build, and April's 10.10.3 shipped a patch for a critical admin-framework backdoor that older OS X versions would never receive. Then on August 4 came a zero-day working against fully patched OS X — the DYLD_PRINT_TO_FILE hole Apple rushed out 10.10.5 to close.
This report lands days after that fix: a second privilege-escalation exploit that 10.10.5 does not stop, meaning Apple's freshest point release is already stale. It matters because it shows the August 4 disclosure wasn't an isolated find but part of a cluster of local-privilege bugs surfacing faster than Apple's release cadence can absorb them.
First-order effects
- Users and enterprises running even the just-released OS X 10.10.5 remain exposed: any local process or attacker with a foothold can escalate privileges, defeating the update many admins deployed specifically to close DYLD_PRINT_TO_FILE.
- Apple is pushed into a second emergency patch cycle within days of shipping one, straining the point-release process that just went through the same motion.
Second-order effects
- Rivals and security reviewers will lean harder on Apple's 'it just works, safely' positioning: with two live zero-days in under two weeks plus the Project Zero disclosures, Macs' practical malware resistance becomes a marketing claim competitors and CIOs can contest.
- Disclosure pressure intensifies — Project Zero's fixed-deadline model showed fixes lagging in beta while exploits go public, so each new find raises the cost of Apple's slow, beta-gated patch pipeline versus shipping security updates independently.
Third-order effects
- If the pattern holds, OS X gets treated by attackers and researchers like any other mainstream target, forcing Apple toward faster standalone security releases rather than bundling fixes into feature point releases — the trajectory the corpus's later Safari/OS X emergency patches confirm.
- Enterprises managing Mac fleets face a structural shift from 'patch at point releases' to continuous vulnerability response, raising the operational weight of desktop OS choices that once assumed Macs were the low-maintenance option.
The trend: Desktop OS security is moving from periodic point-release patching to continuous emergency response as independent researchers surface local privilege-escalation flaws faster than vendors ship fixes.