CVE Watch14 de set. de 2026

CVE-2026-81578

PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

CVSS

9.8

Crítica

EPSS

84.7%

p100

KEV

SIM

31 de ago. de 2026

Exploit Today

0-100

Publicado: 28 de ago. de 2026 · Última mod.: 14 de set. de 2026 · CWE-305

EPSS · 30d

83.7%EPSS · 30 dias85.6%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

PaperCut / NG/MF

Vulnerabilidade

PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

Adicionado ao KEV

31 de ago. de 2026

Corrigir até

14 de set. de 2026

Uso conhecido em ransomware

Não

Descrição resumida

PaperCut NG/MF contains a missing authentication for critical function vulnerability which allows an unauthenticated remote attacker to modify certain system configurations. This vulnerability can be chained with CVE-2026-82078.

Ação necessária

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.

Notas

https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-81578

Descrição técnica

An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.

Referências oficiais

CVEs relacionados

CVECVSSEPSSKEVRExploitTítuloMod.

CVE-2026-1122088.1 ALT

—

——0A flaw was found in the Organization identity-first login flow of the Keycloak authentication server. Keycloak is an open-source identity and access management solution used to secure modern applications and services. The issue occurs when an attacker who belongs to multiple organizations initiates a login and then switches to a registration or password reset path. During this process, a flag indicating a successful login is not properly cleared when the user is removed from the session. An attacker can then provide a victim's username, and the system incorrectly treats the stale flag as proof of the victim's identity. This allows the attacker to bypass authentication and gain full access to the victim's account and connected applications.7h CVE-2026-114230—

19.0%

——6When dispatching SASL frames to authenticate the peer, Proton will also dispatch AMQP frames if they claim to be SASL frames. This allows authentication bypass. However there will be no user name set so the effects depend on how the application deals with this condition - which otherwise means that authentication has not completed yet. This issue affects Apache Qpid Proton C: through 0.40.0. Users are recommended to upgrade to version 0.41.1, which fixes the issue.7d CVE-2026-105375.3 MÉD

21.3%

——6A misconfiguration issue in the affected service in Control-M/Enterprise Manager and Control-M/Server may allow unauthenticated remote users to access certain service functionality, which could potentially result in information exposure or affect service availability. This vulnerability affects : * Control-M/Enterprise Manager versions 9.0.20 to 9.0.22 (excluded) and potentially earlier unsupported versions. * Control-M/Server versions 9.0.20 to 9.0.22 (excluded) and potentially earlier unsupported versions1d CVE-2026-1108836.5 MÉD

23.0%

——7Authentication Bypass by Primary Weakness vulnerability in VideoWhisper.com 2Way VideoCalls and Random Chat webcam-2way-videochat allows Authentication Abuse.This issue affects 2Way VideoCalls and Random Chat: from n/a through 6.1.5.17d CVE-2026-1112839.0 CRÍ

55.6%

——17BMC Helix Network Management on-prem 26.3.00 before 26.3.01 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as the local administrator with any password when SAML single sign-on is configured. Attackers can submit the administrator username with an arbitrary password on the web login page to obtain a SuperAdmin session, modify device credentials, run device commands, and alter audit records.17d CVE-2026-1078088.1 ALT

35.7%

——11Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST /api/login checks EnabledOTP but does not require a WebAuthn assertion when EnabledPasskey is true and no TOTP secret is configured. A passkey-only account is therefore issued a session after password verification, despite Enabled2FA reporting that the account has a second factor. An attacker who obtains the password can take over the account and reach administrative functionality without the registered passkey. This issue is fixed in version 2.5.0.16d