October 22, 2026

CVE Watchtower

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CVE-2026-18835NVD

Vulnerability Summary

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.
Severity Level
CRITICAL(9.9)
Published Date
Aug 20, 2026
Last Modified
Aug 25, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.58%Probability
Root Weakness (CWE)
CWE-78: OS Command Injection ↗
The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.
CVSS v3.1 Base Metrics — Score 9.9 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Ibm Vios >= 4.1.0 and < 4.1.0.50
  • Ibm Vios >= 4.1.1.0 and < 4.1.1.30
  • Ibm Vios >= 4.1.2.0 and < 4.1.2.20
  • Ibm Aix >= 7.2.5 and <= 7.2.5.212
  • Ibm Aix >= 7.3.2 and <= 7.3.2.5
  • Ibm Aix >= 7.3.3 and <= 7.3.3.2
  • Ibm Aix >= 7.3.4 and <= 7.3.4.1
Patched Versions
  • Ibm Vios 4.1.0.50
  • Ibm Vios 4.1.1.30
  • Ibm Vios 4.1.2.20
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References