LIVE · cybersecurity feed
Live wire
ASOS Breach Reveals the Risks in Customer-Facing SaaSUnpatched AhsayCBS flaws exploited to deploy webshells, mine cryptoAI Training Critical as Governance Challenges GrowUS Disrupts Chinese State-Sponsored Hacking ToolsCitrix warns admins to patch new NetScaler RCE flaw immediatelyCisco Patches a Dozen Critical VulnerabilitiesCisco warns of critical flaws allowing Nexus switch takeoverCVE-2026-21589 · Exploitation attempts against critical Atlassian flaw have begun (CVE-2026-21589)Cyber experts call on CISA to create mandatory federal OT rulesGremlin Foresight AI finds system weaknesses and verifies the fixes
cve recordhighexploited in the wildzero day3 of 3 cataloguesexploit reported

CVE-2026-18577

N-able · N-central · N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability

Published · Added to CISA KEV
CVSS8.1
Severityhigh
WeaknessCWE-288
EPSS14.6%96.6th percentile
Exploited3 KEV sources
Ransomware useUnknown
Federal fix dueAug 6, 2026

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

patch window

Called exploited the same day it was disclosed.

Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listingsame day
  3. Last KEV listing1d
  4. Last sighting31d

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources3 of 3
Listings differ by1 d
Strongest claimconfirmed

3 catalogues list it. CIRCL aggregates the others and is shown but not counted.

Public exploitation evidence

10 public reports collected from VulnCheck and CIRCL, first on Aug 2, 2026. Each links to its original source. We have not verified them.

Description

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1

Required action (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

References

← Back to the CVE Tracker

Our coverage of CVE-2026-18577

CVE-2026-18577

N-able ships second N-central hotfix as attackers keep exploiting CVE-2026-18577

N-able has released a second security hotfix for its N-central remote monitoring and management (RMM) solution, urging all partners to update immediately. This new hotfix, version 2026.3.1.10 (2026.3 Hotfix 2), provides additional hardening measures to protect against ongoing exploitation of CVE-2026-18577, an authentication bypass vulnerability. The company recommends upgrading agents on…

CVE-2026-18577high

N-able Issues N-central Hotfix 2 as Attackers Reach Managed Systems and Persist

N-able has issued Hotfix 2 for its N-central platform in response to an actively exploited zero-day vulnerability. The company confirmed that attackers leveraged this flaw to achieve administrative access on managed systems and establish persistence. This activity prompted the release of the hotfix, alongside additional guidance for affected customers.

CVE-2026-18577

N-able warns of N-central auth bypass flaw exploited in attacks

N-able has issued a warning to its customers regarding active exploitation of an authentication bypass vulnerability, identified as CVE-2026-18577, affecting its N-central remote monitoring and management (RMM) platform. The flaw impacts both hosted and on-premises N-central servers.