Cyber Resilience

CVE-2026-2449

Critical

Published: 14 April 2026

Published
14 April 2026
Modified
17 April 2026
KEV Added
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Patch
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CVSS Score v4 9.0 CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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 0.0033 24.5th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-2449 is a critical-severity Argument Injection (CWE-88) vulnerability in Upkeeper (inferred from references). Its CVSS base score is 9.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 24.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

Improper neutralization of argument delimiters in a command ('argument injection') vulnerability in upKeeper Solutions upKeeper Instant Privilege Access allows Hijacking a Privileged Thread of Execution.This issue affects upKeeper Instant Privilege Access: through 1.5.0.

CWE(s)
CWE-88

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1055.003 Thread Execution Hijacking Stealth
Adversaries may inject malicious code into hijacked processes in order to evade process-based defenses as well as possibly elevate privileges.
attack.mitre.org →
Why these techniques?

Argument injection (CWE-88) in a privileged access tool directly enables exploitation for privilege escalation (T1068) via hijacking privileged thread execution (T1055.003).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

Affected Assets

Upkeeper
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References