IBM Aspera Faspex CVE-2026-14959

Exploitation requires valid high-privilege (administrative) credentials on the IBM Aspera Faspex 5 instance, confirmed by CVSS PR:H; unauthenticated exploitation is not possible. The attack is delivered over the network (AV:N) with no attack complexity (AC:L), meaning no race conditions or special environmental states are required beyond valid authentication. No user interaction beyond the attacker's own authenticated session is needed (UI:N). The specific application feature, endpoint, or parameter that accepts and mishandles shell-injectable input is not identified in available data - this detail would be needed to write precise detection rules. Exploitation is explicitly marked non-automatable by CISA SSVC, meaning scripted mass exploitation against internet-facing instances is not a realistic near-term threat. The primary limiting factor is the high-privilege authentication prerequisite: organizations enforcing MFA, restricting admin account provisioning, and limiting network exposure of the Faspex management interface substantially reduce realistic exploitability beyond the raw CVSS score implies.

The CVSS 3.1 vector AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H encodes a meaningful tension: theoretical impact is total (full triad compromise), but the PR:H requirement confines exploitation to actors already holding high-privilege Faspex accounts - a significant limiting factor absent credential exposure. EPSS at 1.04% (60th percentile) is low in absolute terms, indicating the security community does not broadly anticipate near-term exploitation. CISA SSVC independently corroborates this with Exploitation: none and Automatable: no, the latter directly attributable to the authentication barrier precluding mass scanning-and-exploit campaigns. SSVC Technical Impact of 'total' is consistent with arbitrary OS command execution. No CISA KEV listing and no POC availability further reduce urgency for most organizations. The most realistic threat actor is a malicious insider, a compromised privileged account, or an attacker who has previously obtained admin credentials through phishing or credential stuffing. Organizations with strong MFA enforcement on admin accounts and network-restricted Faspex access face materially lower risk than those with internet-exposed admin interfaces and weak credential hygiene.

An attacker who has obtained valid high-privilege Faspex 5 administrative credentials - through credential stuffing, phishing, or insider access - authenticates to the Faspex web interface and submits crafted input containing shell metacharacters to a vulnerable application parameter. The Faspex application passes this input unsanitized to an OS shell, causing the server to execute the attacker's injected commands with the application process's privileges, potentially resulting in full server compromise including data exfiltration or ransomware deployment. No public proof-of-concept exploit has been identified, though CWE-78 techniques are broadly understood and documented across security research literature.