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 is consumed by a downstream component, leading to injection issues (CWE-74). Exploitation could enable an attacker without privileges to elevate their privileges remotely. The CVSS 3.1 base score is 5.4, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and partial confidentiality and integrity impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker who successfully exploits this vulnerability can elevate their privileges over a network, potentially gaining increased access or control within the affected system. The impact is limited to partial confidentiality and integrity loss without availability impact. No known exploits are currently in the wild.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory to remediate this issue.
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.
CVSS v3.1
Score 5.4medium
Affected software
Microsoft
Microsoft Edge (Chromium-based)
Weaknesses
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 is consumed by a downstream component, leading to injection issues (CWE-74). Exploitation could enable an attacker without privileges to elevate their privileges remotely. The CVSS 3.1 base score is 5.4, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and partial confidentiality and integrity impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker who successfully exploits this vulnerability can elevate their privileges over a network, potentially gaining increased access or control within the affected system. The impact is limited to partial confidentiality and integrity loss without availability impact. No known exploits are currently in the wild.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory to remediate this issue.
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: 05/12/2026, 17:37:40 UTC
Last enriched: 08/11/2026, 16:56:40 UTC
Last updated: 09/14/2026, 22:01:34 UTC
Views: 108
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