Security 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 0.016 76th percentile
Risk Priority 74 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-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 Junk Data (T1001.001); ranked in the top 24% 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

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-3267Same product: Cyberpower Powerpanel Server
CVE-2023-3266Same product: Cyberpower Powerpanel Server
CVE-2026-49147Shared CWE-150
CVE-2024-28085Shared CWE-150
CVE-2024-33899Shared CWE-150
CVE-2026-25996Shared CWE-150
CVE-2024-58251Shared CWE-150
CVE-2024-36052Shared CWE-150
CVE-2024-43785Shared CWE-150
CVE-2026-3108Shared 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 partial match
blocks

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.6.6 Confidentiality or non-disclosure agreements partial match
removes
A.8.19 Installation of software on operational systems partial match
removes
A.8.25 Secure development life cycle partial match
blocks

A.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reach escape/sequence neutralization; this prevents exploitation for many instances but leaves a bounded remainder where implementation is incomplete or the specific sequences are missed.

A.8.26 Application security requirements partial match
blocks

A.8.26 requires identifying and specifying requirements including resilience against SQL injections, input validation, and output controls (items d, j, l, m, n), which when addressed stop exploitation of unneutralized escape sequences; this covers only a minority slice of CWE-150's broader meta/control sequences and downstream contexts, with the bulk left to implementation details in other controls.

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

A.8.27 mandates security-by-design principles including data validation/sanitization, distrusting external input, and design reviews against attack patterns, which reaches a minority slice of improper neutralization (e.g. via secure architecture and hardening) but leaves most instances of missing or incorrect escaping in downstream components unaddressed.

A.8.28 Secure coding partial match
prevents

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

References