CVE-2026-55007
published 2026-09-08CVE-2026-55007: Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
PriorityP354high8.1CVSS 3.1
AVNACHPRNUINSUCHIHAH
EPSS
0.71%
52.9th percentile
Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server_subscription_edition | < 15.02.2562.049 | 15.02.2562.049 |
| microsoft | microsoft_exchange_server_2019_cumulative_update_14 | >= 15.02.0.0 < 15.02.1544.046 | 15.02.1544.046 |
| microsoft | microsoft_exchange_server_2019_cumulative_update_15 | >= 15.02.0.0 < 15.02.1748.051 | 15.02.1748.051 |
| microsoft | microsoft_exchange_server_subscription_edition_rtm | >= 15.02.0.0 < 15.02.2562.049 | 15.02.2562.049 |
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Hackernews
Microsoft Patches Record 974 Flaws, Including Two Exploited Windows Zero-Days
blogs_hackernews·2026-09-09·CVSS 7.8
CVE-2026-85880 [HIGH] Microsoft Patches Record 974 Flaws, Including Two Exploited Windows Zero-Days
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## Microsoft Patches Record 974 Flaws, Including Two Exploited Windows Zero-Days
Microsoft on Tuesday broke Patch Tuesday records by addressing an earth-shattering 974 vulnerabilities spanning its software portfolio, including two flaws that it said have been actively exploited in the wild.
These include 723 flaws in Windows, 111 in Office and Office 2016, 62 in SQL, and 22 in Developer Tools. Of these, over 110 shortcomings have been assigned a critical severity rating. Three prominent vulnerability types, namely privilege escalation, remote code execution, and information disclosure, account for nearly 90% of the flaws patche
Sans Isc
September 2026 Microsoft Patch Tuesday, (Tue, Sep 8th)
blogs_sans_isc·2026-09-08·CVSS 7.8
CVE-2026-81963 [HIGH] September 2026 Microsoft Patch Tuesday, (Tue, Sep 8th)
September 2026 Microsoft Patch Tuesday
Published: 2026-09-08. Last Updated: 2026-09-08 19:20:30 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
This month, Microsoft released patches for a record-breaking 973 vulnerabilities, including 113 rated critical. It is by far the largest Patch Tuesday to date, well ahead of the previous high of 664 set in July 2026. Two vulnerabilities are listed as exploited in the wild, while none were publicly disclosed before Patch Tuesday. Notable fixes include Windows privilege escalation and critical RCEs in Skype for Business, MSMQ and RRAS.
A few vulnerabilities worth mentioning:
Windows Update Stack Elevation of Privilege Vulnerability (CVE-2026-81963)
Microsoft reports that CVE-2026-81963 is being exploited, though it was not publicly disclosed b
Rapid7
Patch Tuesday - September 2026
blogs_rapid7·2026-09-08·CVSS 7.8
CVE-2026-85880 [HIGH] Patch Tuesday - September 2026
Microsoft is publishing 974 own-product vulnerabilities on September 2026 Patch Tuesday , including 723 vulnerabilities in Windows. Along with Microsoft fixes for 25 non-Microsoft CVEs, that brings the total number of vulnerabilities on the table today to 999. Whether this is the biggest Patch Tuesday ever depends on how we count, but this is by far the most CVEs that Microsoft has ever published in a single day. As Rapid7 noted last month, there is no reason to suppose that Patch Tuesday will ever return to the lower volumes we saw prior to 2026. Microsoft is aware of exploitation in the wild for two of the vulnerabilities published today.
## Windows ALPC: zero-day EoP
The eternal game of elevation of privilege whack-a-mole between Microsoft and attackers continues. This month, the batt
2026-09-08
Published