Is CVE-2026-2311 actively exploited?

No active exploitation of CVE-2026-2311 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-2311 be exploited remotely?

Yes. CVE-2026-2311 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-2311?

CVE-2026-2311 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-2311

CRITICAL

CVE-2026-2311

CWE-284Published: April 30, 2026· Updated: May 1, 2026

9.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.7th

Official Description

IBM i 7.6, 7.5, 7.4, 7.3, and 7.2 s vulnerable to privilege escalation caused by an invalid IBM i Web Administration GUI authorization check. A malicious actor could cause user-controlled code to run with administrator privilege.

NVD Source

Technical Analysis

CVE-2026-2311 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

IBM1 product

Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.ibm.com/support/pages/node/7269560

News & Research Mentioning CVE-2026-2311

One-Character Linux Kernel Flaw Enables Local Root Access, Exploits Now Public

The Hacker News· Jun 8, 2026

Security researchers have published a detailed, working exploit for a Linux kernel use-after-free that lets an unprivileged local user escalate to root and break out of a container. The flaw, CVE-2026-23111, sits in the kernel's nf_tables packet-filtering code and was patched upstream on February 5, 2026. Exodus Intelligence released its full technical walkthrough on June 8, and it is not even [xlite_meta score:50 src:The Hacker News xlite_fp:f3f56c213fccc713537bd0df744f2dff8ad5966a96f3dd85b260ce4ab1f006ad]