CVE-2022-26700

What it actually does

Memory corruption during processing of maliciously crafted web content allows arbitrary code execution in the affected process context.

Why it matters to the business

Attackers could gain control of systems running the vulnerable software, leading to data theft, system compromise, or further network pivoting; the issue affects a widely used component with many downstream dependents, though no active exploitation campaigns are recorded.

How an attack unfolds

An attacker crafts malicious web content that triggers the memory corruption flaw when processed; successful exploitation results in code execution without requiring user authentication beyond normal browsing or URL handling.

How to fix it

Upgrade curl to the fixed commit 5ce164e0e9290c96eb7d502173426c0a135ec008 or later; apply vendor patches for any downstream products and verify the update across all instances.

How to confirm the fix worked

Confirm the installed version reports the fixed commit hash or later; re-test processing of known malicious web content samples in a controlled environment to verify the crash or corruption no longer occurs.

Typical attack path

1. Attacker prepares malicious web content exploiting the memory corruption
2. Victim processes the content via the vulnerable software (e.g., through URL handling or web-related functions)
3. Corruption leads to control-flow hijacking and arbitrary code execution
4. Attacker installs persistence, exfiltrates data, or pivots within the environment

How to detect it

Review application and system logs for unexpected crashes or abnormal process behavior during web content processing; look for post-exploitation artifacts such as new processes or network connections initiated by the affected binary.

What your security team should do

• Prioritize patching all curl instances to the fixed commit within standard change windows
• Monitor EPSS and exploit maturity indicators for any future increase in risk
• Review web content handling workflows for additional hardening opportunities
• Update asset inventories to reflect the corrected version across the environment