CVE-2026-26144
published 2026-03-10CVE-2026-26144: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose…
PriorityP425medium4.7CVSS 3.1
AVNACLPRNUIRSCCLINAN
EPSS
1.21%
66.0th percentile
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_365_apps_for_enterprise | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| msrc | microsoft_365_apps_for_enterprise_for_32-bit_systems | — | — |
| msrc | microsoft_365_apps_for_enterprise_for_64-bit_systems | — | — |
CVSS provenance
nvdv3.14.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
vendor_msrc7.5HIGH
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Microsoft
Microsoft Excel Information Disclosure Vulnerability
vendor_msrc·2026-03-10·CVSS 7.5
CVE-2026-26144 [HIGH] CWE-79 Microsoft Excel Information Disclosure Vulnerability
Microsoft Excel Information Disclosure Vulnerability
Description: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
FAQ: Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
FAQ: What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could potentially cause Copilot Agent mode to exfiltrate data via unintended network egress, enabling zero-click information disclosure attack
Microsoft Office Excel: Microsoft Office Excel
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Information Disclosure
Exploit Status: Publicly Disc
GHSA
GHSA-39m5-6xwx-6qjf: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disc
ghsa_unreviewed·2026-03-10
CVE-2026-26144 [HIGH] CWE-79 GHSA-39m5-6xwx-6qjf: Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disc
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
No detection rules found.
No public exploits indexed.
Sophos
March Patch Tuesday visits 15 product families
blogs_sophos·2026-03-13
March Patch Tuesday visits 15 product families
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Talos
Microsoft Patch Tuesday for March 2026 — Snort rules and prominent vulnerabilities
blogs_talos·2026-03-10·CVSS 8.8
CVE-2026-26110 [HIGH] Microsoft Patch Tuesday for March 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for March 2026 which includes 79 vulnerabilities, including three that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.” Microsoft assessed that exploitation of the three “critical” vulnerabilities is “less likely.”
CVE-2026-26110 and CVE-2026-26113 are “critical” Microsoft Office Remote Code Execution Vulnerabilities that could allow an unauthorized attacker to execute code locally; the former is a type confusion issue caused by access to a resource using an incompatible type, and the latter is an untrusted pointer dereference.
CVE-2026-26144 is a “critical” information disclosure vulnerability affecting Microsoft Excel. This vulnerability is due to improper neutralization of input in Mi
Talos
Microsoft Patch Tuesday for March 2026 — Snort rules and prominent vulnerabilities
blogs_talos·2026-03-10·CVSS 8.8
CVE-2026-26110 [HIGH] Microsoft Patch Tuesday for March 2026 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for March 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for March 2026 which includes 79 vulnerabilities, including three that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.” Microsoft assessed that exploitation of the three “critical” vulnerabilities is “less likely.”
CVE-2026-26110 and CVE-2026-26113 are “critical” Microsoft Office Remote Code Execution Vulnerabilities that could allow an unauthorized attacker to execute code locally; the former is a type confusion issue caused by access to a resource using an incompatible type, and the latter is an untrusted pointer dereference.
CVE-2026-26144 is a “critical” information disclosure vulnerability affecti
Qualys
Microsoft and Adobe Patch Tuesday, March 2026 Security Update Review | Qualys
blogs_qualys·2026-03-10
Microsoft and Adobe Patch Tuesday, March 2026 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday forMarch2026
- Adobe Patches for March 2026
- Zero-day Vulnerabilities Patched inMarchPatch Tuesday Edition
- Critical Severity Vulnerabilities Patched inMarchPatch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response with TruRisk Eliminate
- Qualys Monthly Webinar Series
Microsoft has rolled out its March 2026 Patch Tuesday updates, delivering a fresh batch of security fixes designed to keep Windows environments protected from emerging threats. The release addresses multiple vulnerabilities spanning Windows components and other Microsoft products. Here’s a quick breakdown of what you need to
Bleepingcomputer
Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws
blogs_bleepingcomputer·2026-03-10·CVSS 8.8
[HIGH] Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws
## Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws
## Lawrence Abrams
The number of bugs in each vulnerability category is listed below:
46 Elevation of Privilege Vulnerabilities
2 Security Feature Bypass Vulnerabilities
18 Remote Code Execution Vulnerabilities
10 Information Disclosure Vulnerabilities
4 Denial of Service Vulnerabilities
4 Spoofing Vulnerabilities
When BleepingComputer reports on Patch Tuesday security updates, we only count those released by Microsoft today. Therefore, the number of flaws does not include 9 Microsoft Edge flaws, Mariner, Payment Orchestrator Service, Azure, and Microsoft Devices Pricing Program flaws fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the
Qualys
Microsoft and Adobe Patch Tuesday, March 2026 Security Update Review
blogs_qualys·2026-03-10
Microsoft and Adobe Patch Tuesday, March 2026 Security Update Review
## Table of Contents
Microsoft Patch Tuesday forMarch2026
Adobe Patches for March 2026
Zero-day Vulnerabilities Patched inMarchPatch Tuesday Edition
Critical Severity Vulnerabilities Patched inMarchPatch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response with TruRisk Eliminate
Qualys Monthly Webinar Series
Microsoft has rolled out its March 2026 Patch Tuesday updates, delivering a fresh batch of security fixes designed to keep Windows environments protected from emerging threats. The release addresses multiple vulnerabilities spanning Windows components and other Microsoft products. Here’s a quick breakdown of what you need to know.
## Mi
Crowdstrike
March 2026 Patch Tuesday: Updates and Analysis
blogs_crowdstrike
March 2026 Patch Tuesday: Updates and Analysis
4 Ways Businesses Use CrowdStrike Charlotte AI to Transform Security Operations Mar 12, 2026
Enhanced Network Visibility: A Dive into the Falcon macOS Sensor's New Capabilities Mar 11, 2026
March 2026 Patch Tuesday: Eight Critical Vulnerabilities and Two Publicly Disclosed Among 82 CVEs Patched Mar 10, 2026
Falcon for XIoT Extends Asset Protection to Healthcare Environments Mar 09, 2026
4 Ways Businesses Use CrowdStrike Charlotte AI to Transform Security Operations Mar 12, 2026
Enhanced Network Visibility: A Dive into the Falcon macOS Sensor's New Capabilities Mar 11, 2026
March 2026 Patch Tuesday: Eight Critical Vulnerabilities and Two Publicly Disclosed Among 82 CVEs Patched Mar 10, 2026
Falcon for XIoT Extends Asset Protection to Healthcare Environments Mar 09, 2026
Video Highli
Sophos
March Patch Tuesday visits 15 product families
blogs_sophos
March Patch Tuesday visits 15 product families
Share This
Microsoft on Tuesday released 84 patches affecting 15 product families – including a few you’ve possibly never encountered. Eight of the addressed issues are considered by Microsoft to be of Critical severity, though none of those affect Windows, nor are they expected to be exploited within the next 30 days. In addition, five of those Critical issues were in fact addressed by Microsoft in advance of Patch Tuesday itself, as we’ll discuss below. Twenty-two have a CVSS base score of 8.0 or higher, including one with a 9.8 base score. None are known to be under active exploit in the wild, but two are publicly disclosed so far.
At patch time, six CVEs are judged more likely to be exploited in the next 30 days by the company’s estimation. Various of this month’s issues are amenable
Wiz
CVE-2026-26144 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.5
CVE-2026-26144 [HIGH] CVE-2026-26144 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-26144 :
vulnerability analysis and mitigation
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Source : NVD
## 4.7
Score
Published March 10, 2026
Severity MEDIUM
CNA Score 7.5
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 26
Exploitation Probability (EPSS) 0.1
Sources
NVD
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2026-03-10
Published