Security Resilience

CVE-2026-2564

Auth Bypass

Auth Bypass
Published
16 February 2026
Modified
15 April 2026
CVSS Score v4 9.2
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0084 58th percentile
Risk Priority 38 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-2564 is a critical-severity Weak Password Recovery Mechanism for Forgotten Password (CWE-640) vulnerability. Its CVSS base score is 9.2 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Valid Accounts (T1078); ranked in the top 42% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to IA-12 (Identity Proofing) and IA-5 (Authenticator Management) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-2564 is a security vulnerability affecting the Intelbras VIP 3260 Z IA firmware version 2.840.00IB005.0.T, specifically an unknown functionality within the /OutsideCmd file. The flaw enables weak password recovery, classified under CWE-640 (Weak Password Recovery Mechanism for Forgotten Password). It carries a CVSS v3.1 base score of 8.1 (High), with vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating network accessibility, high attack complexity, no required privileges or user interaction, unchanged scope, and high impacts to confidentiality, integrity, and availability. The vulnerability was published on 2026-02-16.

A remote attacker with no privileges can exploit this vulnerability over the network by manipulating the affected /OutsideCmd functionality, resulting in weak password recovery. Exploitation is described as highly complex and difficult, aligning with the high attack complexity (AC:H) metric. Successful exploitation could grant attackers significant access, potentially compromising the device's confidentiality, integrity, and availability at a high level.

VulDB advisories, referenced at https://vuldb.com/?ctiid.346171, https://vuldb.com/?id.346171, and https://vuldb.com/?submit.741776, recommend upgrading the affected component to mitigate the vulnerability. No additional patches or workarounds are detailed in the available information.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability Data

A security flaw has been discovered in Intelbras VIP 3260 Z IA 2.840.00IB005.0.T. Affected by this vulnerability is an unknown functionality of the file /OutsideCmd. The manipulation results in weak password recovery. It is possible to launch the attack remotely.…

more

Attacks of this nature are highly complex. The exploitation appears to be difficult. It is recommended to upgrade the affected component.

CWE(s)
CWE-640

Related Threats

MITRE ATT&CK Enterprise Techniques

T1078 Valid Accounts Stealth
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1078.004 Cloud Accounts Stealth
Valid accounts in cloud environments may allow adversaries to perform actions to achieve Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1586 Compromise Accounts Resource Development
Adversaries may compromise accounts with services that can be used during targeting.
attack.mitre.org →
T1110 Brute Force Credential Access
Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-7028Shared CWE-640
CVE-2025-62406Shared CWE-640
CVE-2023-49589Shared CWE-640
CVE-2026-84699Shared CWE-640
CVE-2023-28821Shared CWE-640
CVE-2026-7652Shared CWE-640
CVE-2025-63314Shared CWE-640
CVE-2024-8692Shared CWE-640
CVE-2024-6203Shared CWE-640
CVE-2025-2093Shared CWE-640

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

IA-12 Identity Proofing good match

Identity proofing at appropriate assurance levels ensures forgotten-password recovery cannot succeed without strong verification of the user.

IA-5 Authenticator Management good match

Authenticator management requires secure distribution, reset, and verification procedures that directly address weak password recovery flows.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-01 mostly match
blocks

Credential lifecycle management directly includes password reset/recovery flows.

PR.AA-02 mostly match
blocks

Identity proofing is the core control that prevents weak or bypassed recovery mechanisms.

PR.AA-03 partial match
blocks

Authentication policy covers strength/MFA but does not address recovery path weaknesses.

PR.PS-06 partial match
blocks

Secure SDLC reduces implementation flaws but is not specific to password-recovery design.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding partial match
prevents

Secure-coding standards can prevent weak recovery implementations, yet the control is wider in scope.

References