CVE-2026-57976: Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.

Details

Source

NVD Recent CVEs (US · database · site)

Severity

medium — CVSS 6.5

Published

2026-07-14

Last updated

2026-07-20

Exploitation

Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-57976

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-2026-579760.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl
• mediumCVE-2026-57976: Windows Active Directory Domain Services Denial of Service Vulnerabilitymsrc

Recent advisories for Null pointer dereference

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.

• highCVE-2026-67304: FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard device co…nvd · 2026-08-01
• highCVE-2026-67288: FreeRDP before 3.29.0 contains a null pointer dereference vulnerability in smartcard cache req…nvd · 2026-08-01
• highCVE-2026-18064: An incomplete fix for CVE-2026-15352 in the NASA core Flight System (cFS) Health and Safety (H…nvd · 2026-07-30
• highCVE-2026-67184: TinyWeb through 0.0.8 contains a null pointer dereference vulnerability that allows unauthenti…nvd · 2026-07-28
• unknownCVE-2026-17574: HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file contain…nvd · 2026-07-27
• unknownCVE-2026-64511: In the Linux kernel, the following vulnerability has been resolved: ACPI: NFIT: core: Fix poss…nvd · 2026-07-25

More from NVD Recent CVEs

• unknownCVE-2026-55735: Improper Verification of Cryptographic Signature in ueberauth guardian allows an unauthenticat…2026-08-01
• unknownCVE-2026-55734: Allocation of Resources Without Limits or Throttling vulnerability in ueberauth guardian (Guar…2026-08-01
• unknownCVE-2026-55733: Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of se…2026-08-01
• unknownCVE-2026-54894: Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of se…2026-08-01
• mediumCVE-2026-67355: guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the …2026-08-01