Key Critical Vulnerabilities Exploited — A CyberDudeBivash Threat Report (Q4 2025)

What’s actively being exploited right now — and how to harden identity, edge, and build systems against the latest campaigns.

cyberdudebivash.com | cyberbivash.blogspot.com

Author: CyberDudeBivash — cyberbivash.blogspot.com | Published: Oct 13, 2025

TL;DR

Oracle E-Business Suite (CVE-2025-61882): Unauth RCE zero-day exploited in the wild; linked to extortion ops.
Chrome V8 (CVE-2025-10585): Type-confusion 0-day used for drive-by RCE; patched in Chrome 140.0.7339.185/186.
Cisco ASA/FTD (CVE-2025-20333 & 20362): VPN web server chain enables auth bypass → RCE; mass scanning & exploitation observed.
Android (e.g., CVE-2025-38352): Google notes limited, targeted exploitation in September 2025 updates.
Palo Alto PAN-OS (CVE-2024-3400): Historic edge-firewall RCE widely abused by APTs; still relevant in 2025 incident chains.
Ivanti (CVE-2024-21887 / 21893 & later): Repeated VPN exploitation for initial access and ransomware pivots.
TeamCity (CVE-2023-42793): Auth-bypass RCE continued to fuel supply-chain and ransomware ops through 2025 on unpatched servers.
SAP Visual Composer (CVE-2025-31324): Unauth file-upload → one-click RCE; active exploitation confirmed.

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Contents

1) Oracle E-Business Suite Zero-Day — CVE-2025-61882

Unauthenticated RCE via EBS components powering Concurrent Processing and BI Publisher integrations. Campaigns since Aug 2025 feature extortion and data-theft claims, with Oracle issuing an emergency patch and IOCs. Internet-facing EBS needs immediate patching, log review, and threat-hunt sweeps.

Exploit impact: Full app takeover → data exfil → extortion.
Defender tasks: Patch, rotate app creds, search for webshells, audit outbound to unfamiliar IPs, quarantine internet exposure until clean.

2) Chrome V8 Type-Confusion — CVE-2025-10585

High-severity V8 bug used in the wild for arbitrary code execution via booby-trapped pages. Chrome 140.0.7339.185/186 addresses it; enterprises must enforce browser updates and fleet-wide verification (no stragglers).

3) Cisco ASA/FTD VPN Chain — CVE-2025-20333 & CVE-2025-20362

Active exploitation of ASA/FTD web-VPN surface: an auth-bypass on restricted endpoints chained to RCE enables device takeover, persistence, and pivoting. Shadowserver counts tens of thousands of exposed, unpatched devices. Treat as an emergency: patch, restrict VPN portals, and check for post-exploitation artifacts.

4) Android — Actively Exploited (e.g., CVE-2025-38352)

Google’s September 2025 bulletin flags limited, targeted exploitation of multiple Android framework/kernel issues. Prioritize device patching on corporate fleets and enforce Play Protect policies + EDR for mobile where available.

5) Palo Alto PAN-OS (CVE-2024-3400)

A 2024 GlobalProtect command-injection RCE that remained a 2025 kill-chain ingredient for APTs on lagging fleets. If you ever enabled vulnerable configs, assume exposure: review for post-exploitation activity and re-baseline edge devices.

6) Ivanti VPN (CVE-2024-21887 / 21893 and related)

SSRF and related flaws saw widespread exploitation and government advisories. If appliances weren’t rebuilt from golden images after incidents, assume persistence and re-image — not just patch.

7) TeamCity (CVE-2023-42793)

The notorious auth-bypass RCE in TeamCity keeps paying dividends for threat actors in 2025 where servers remain unpatched or exposed. Because TeamCity sits in build chains, treat as supply-chain-risk: scrub secrets, rotate tokens, verify artifact integrity.

8) SAP Visual Composer (CVE-2025-31324)

Unauthenticated file-upload flaw (CVSS 10) enabling webshell drop and instant RCE on SAP NetWeaver Visual Composer. Active exploitation observed. Patch, search for unexpected files under app roots, and review outbound connections.

Immediate Actions & Patch Cadence

Patch windows: 72-hour emergency window for edge/VPN/IdP, 7-day for server apps, 24-hour for browsers and mobile.
Credential & token rotation: Post-patch, rotate app/service accounts; invalidate web sessions on affected platforms.
Assume compromise on internet-facing gear: hunt for webshells, unusual admin logins, config drift, and suspicious egress.
Zero-trust guardrails: device posture checks, conditional access, and MFA that’s phishing-resistant (FIDO/passkeys).
Backups & rebuild: keep golden images for edge/VPN appliances; when in doubt, re-image then patch.

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Closing

The 2025 exploit landscape is ruthless at the edge (VPN/firewall), in the browser, and inside build systems. Patch with urgency, rotate secrets, and verify integrity across identity and CI/CD. If you need us to pressure-test your environment or lead a patch sprint, we’re ready.

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