Cyber Resilience

CVE-2023-3265

Cyberpower Powerpanel Server ≤ 2.6.9

Published
14 August 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.015 72th percentile
Risk Priority 74 floored blend · peak EPSS

Summary

CVE-2023-3265 is a critical-severity Improper Neutralization of Escape, Meta, or Control Sequences (CWE-150) vulnerability in Cyberpower Powerpanel Server. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Content Injection (T1659); ranked in the top 28% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

An authentication bypass exists on CyberPower PowerPanel Enterprise by failing to sanitize meta-characters from the username, allowing an attacker to login into the application with the default user "cyberpower" by appending a non-printable character.An unauthenticated attacker can leverage this vulnerability…

more

to log in to the CypberPower PowerPanel Enterprise as an administrator with hardcoded default credentials.

CWE(s)
CWE-150NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-3266Same product: Cyberpower Powerpanel Server
CVE-2023-3267Same product: Cyberpower Powerpanel Server
CVE-2026-21439Shared CWE-150
CVE-2026-40505Shared CWE-150
CVE-2025-65082Shared CWE-150
CVE-2023-39342Shared CWE-150
CVE-2025-64494Shared CWE-150
CVE-2024-47252Shared CWE-150
CVE-2026-41526Shared CWE-150
CVE-2023-40185Shared CWE-150

Affected Assets

cyberpower
powerpanel server
≤ 2.6.9

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.10
  • V1.3.12

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.PS-06 mostly match
prevents

Secure SDLC practices directly require input neutralization and escaping to prevent this class of flaw.

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect the weakness but does not itself implement neutralization.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates input validation and output encoding that directly neutralizes escape/meta sequences.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection and malformed input sequences.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce attack surface but do not prescribe specific neutralization techniques.

A.8.28 Secure coding partial match
prevents

Secure coding standards require proper escaping and neutralization of control characters before downstream processing.

References