CVE-2026-21957General(oracle / vm_virtualbox)

LOWCVSS 7.5 · HIGH

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).

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1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://www.oracle.com/security-alerts/cpujan2026.html

Weakness type (CWE)

CWE-269

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

vm_virtualbox

Threat summary

Public PoC is present in monitored signal
3 mentions across 3 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 1 signal
General: 2 classified signals
Peaked 2d ago at 1 mentions (2026-02-16); latest day: 1
3 total mentions across 3 days

Affected systems

Vendors

oracle

Products

vm_virtualbox

2 versions affected across 1 product

Deep dive

Activity timeline3 mentions / 3d

Signal classification2 categories

General

266.7%

PoC

133.3%

Referenced assets1 URL

By indicator

https://www.cveshield.com/dashboard

Classification over time

Date	Total	Labels

2026-02-16	1	PoC1
2026-02-17	1	General1
2026-02-18	1	General1

Full discourse3 posts

NiNi@terrynini38514235d
PoC
I found a vulnerability in Oracle VirtualBox (CVE-2026-21957) back in September 2025. It can be turned into AAR/AAW, and then escaping the VM is pretty easy. I originally planned to find a vulnerability for Pwn2Own, but since I found the vuln in September, sitting on a practical vuln for that long didn’t feel very ethical, so I eventually reported it to ZDI. But I still finished the exploitation + demo video as practice.
Post summary
The author discovered CVE‑2026‑21957 in Oracle VirtualBox, demonstrated an exploitation PoC via a demo video, reported it to ZDI, and provided some technical detail about VM escape, but no patch or evidence of wild exploitation is mentioned.
2816831.5K53688.2K
2.7K followersView on X
CVETrends@CVEShield234d
General
Top 5 Trending CVEs: 1 - CVE-2026-20700 2 - CVE-2026-20841 3 - CVE-2026-2006 4 - CVE-2026-1281 5 - CVE-2026-21957 #cve #cvetrends #cveshield #cybersecurity https://www.cveshield.com/dashboard
Post summary
The post merely lists five trending CVEs and links to a dashboard, offering no further details on exploitation, patches, or technical specifics.
00012171
1.7K followersView on X
CVETrends@CVEShield235d
General
Top 5 Trending CVEs: 1 - CVE-2026-25253 2 - CVE-2026-21509 3 - CVE-2026-2441 4 - CVE-2026-21957 5 - CVE-2026-20841 #cve #cvetrends #cveshield #cybersecurity https://www.cveshield.com/dashboard
Post summary
The post simply lists five trending CVEs with no additional details on exploitation, patches, or technical specifics.
00010211
1.7K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	oracle	vm_virtualbox	7.1.14	-	-
App	oracle	vm_virtualbox	7.2.4	-	-

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