CVE-2026-42838: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Microsoft Microsoft Edge (Chromium-based)
Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability in Microsoft Edge (Chromium-based) arises from improper neutralization of special elements in output that are consumed by a downstream component, leading to an injection flaw (CWE-74). Exploitation could enable an attacker to elevate privileges remotely. The CVSS 3.1 vector indicates the attack requires no privileges and user interaction but can be performed over the network. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation could allow an unauthorized attacker to elevate privileges remotely, potentially leading to limited confidentiality and integrity impacts. There is no indication of availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42838 to remediate this vulnerability.
CVE-2026-42838: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Microsoft Microsoft Edge (Chromium-based)
Description
Improper neutralization of special elements in output used by a downstream component ('injection') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Edge (Chromium-based) arises from improper neutralization of special elements in output that are consumed by a downstream component, leading to an injection flaw (CWE-74). Exploitation could enable an attacker to elevate privileges remotely. The CVSS 3.1 vector indicates the attack requires no privileges and user interaction but can be performed over the network. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation could allow an unauthorized attacker to elevate privileges remotely, potentially leading to limited confidentiality and integrity impacts. There is no indication of availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42838 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T14:51:12.704Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42838","vendor":"Microsoft"}]
Threat ID: 6a036564cbff5d861008cc93
Added to database: 5/12/2026, 5:37:40 PM
Last enriched: 5/12/2026, 6:07:31 PM
Last updated: 5/13/2026, 5:00:39 AM
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.