[NEU] [hoch] Microsoft Exchange Server: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Microsoft Exchange Server ausnutzen, um beliebigen Code auszuführen, Spoofing-Angriffe durchzuführen, erweiterte Berechtigungen zu erlangen, Daten zu manipulieren oder offenzulegen sowie einen Denial-of-Service-Angriff zu verursachen.
Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3268
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-693610.79% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693800.71% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693550.84% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 56% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-693781.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 64% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693750.59% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693820.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-696410.85% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 56% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-693560.70% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-550070.73% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-69361 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69380 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69355 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69378 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69375 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69382 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69641 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-69356 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-55007 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownMultiples vulnérabilités dans les produits Microsoft (09 septembre 2026)cert-fr-avis
- unknownNCSC-2026-0349 [1.00] [M/H] Kwetsbaarheden verholpen in Microsoft Exchange serverncsc-nl
- criticalCVE-2026-69641: Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate pr…nvd
- mediumCVE-2026-69382: Use of a broken or risky cryptographic algorithm in Microsoft Exchange Server allows an unauth…nvd
- highCVE-2026-69380: Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate pr…nvd
- highCVE-2026-69378: Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny se…nvd
- mediumCVE-2026-69375: Authorization bypass through user-controlled key in Microsoft Exchange Server allows an author…nvd
- mediumCVE-2026-69361: Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker …nvd
- criticalCVE-2026-69356: Improper neutralization of input during web page generation ('cross-site scripting') in Micros…nvd
- highCVE-2026-69355: External control of file name or path in Microsoft Exchange Server allows an authorized attack…nvd
- highCVE-2026-55007: Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over …nvd
- highCVE-2026-69380: Microsoft Exchange Server Elevation of Privilege Vulnerabilitymsrc
Recent advisories for Microsoft Exchange Server
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownNCSC-2026-0349 [1.00] [M/H] Kwetsbaarheden verholpen in Microsoft Exchange serverncsc-nl · 2026-09-08
- criticalCVE-2026-69641: Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate pr…nvd · 2026-09-08
- mediumCVE-2026-69382: Use of a broken or risky cryptographic algorithm in Microsoft Exchange Server allows an unauth…nvd · 2026-09-08
- highCVE-2026-69380: Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate pr…nvd · 2026-09-08
- highCVE-2026-69378: Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny se…nvd · 2026-09-08
- mediumCVE-2026-69375: Authorization bypass through user-controlled key in Microsoft Exchange Server allows an author…nvd · 2026-09-08
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