PatchSiren

PatchSiren cyber security CVE debrief

CVE-2017-0149 Microsoft CVE debrief

CVE-2017-0149 is a Microsoft Internet Explorer memory corruption vulnerability that CISA lists in its Known Exploited Vulnerabilities (KEV) catalog. That KEV listing means CISA has determined the issue has been exploited in the wild and expects organizations to apply vendor-provided updates as a priority. In the supplied corpus, CISA added the entry on 2022-05-24 and set a remediation due date of 2022-06-14.

Vendor
Microsoft
Product
Internet Explorer
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-05-24
Original CVE updated
2022-05-24
Advisory published
2022-05-24
Advisory updated
2022-05-24

Who should care

Security teams that still support Internet Explorer, legacy Windows applications that depend on IE components, and asset owners responsible for endpoint patching and browser hardening should treat this as high priority. Any environment with IE enabled for compatibility workflows should verify remediation quickly.

Technical summary

The available source corpus identifies the issue as a memory corruption vulnerability in Microsoft Internet Explorer. No further technical mechanism, exploit path, or impact details are provided in the supplied materials. The key defensive signal is CISA KEV inclusion, which is a strong indicator of known real-world exploitation and a need to apply Microsoft guidance promptly.

Defensive priority

High. KEV inclusion elevates this above a routine vulnerability notice because CISA has marked it as actively exploited. Organizations should prioritize remediation on any affected systems, especially those with Internet Explorer exposure or legacy dependencies.

Recommended defensive actions

  • Apply Microsoft updates or mitigations per vendor instructions as soon as possible.
  • Inventory systems that still use or enable Internet Explorer, including legacy application dependencies.
  • Confirm patch status against CISA KEV and verify remediation before the due date where applicable.
  • If IE is not required, disable or remove access paths where operationally feasible.
  • Validate endpoint and vulnerability management coverage for any hosts that may still rely on legacy browser components.

Evidence notes

The debrief is based only on the supplied CISA KEV source item and the official links provided in the corpus. The source item identifies the vulnerability as a Microsoft Internet Explorer memory corruption issue, marks it as KEV, and records dateAdded 2022-05-24 with dueDate 2022-06-14. No CVSS score or additional technical exploit details were supplied.

Official resources

CISA KEV lists this issue as known exploited. The supplied corpus dates the KEV entry to 2022-05-24 and the due date to 2022-06-14; these dates describe the catalog entry and remediation timeline, not necessarily the original vulnerability-