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No exploitation reportedAwaiting NVD analysis

CVE-2026-116499

Arbitrary Code Execution in Qiskit SDK QPY Deserialization

No exploitation reported by the sources we read.

  • Published2026-11-08
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

IBM Qiskit SDK 1.4.2 through 2.6.2 could allow a local attacker to execute arbitrary code due to deserialization of untrusted data.

Timeline

dates in UTC
  1. 2026-11-0817:03CVE publishedCNA

Versions per branch

Products declared by the CNA

As ibm, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • IBM Qiskit SDK
    Affected
    • ≥ 1.4.2, ≤ 2.6.2no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-08

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-116499 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.18.42026-11-08
  • NVDCVSS 3.18.4read 2026-11-08
  • CNAweakness (CWE)CWE-5022026-11-08
  • NVDweakness (CWE)CWE-502read 2026-11-08

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-08
Last Modified
2026-11-08
NVD status
Awaiting Analysis

Frequently asked questions

What is CVE-2026-116499?

IBM Qiskit SDK 1.4.2 through 2.6.2 could allow a local attacker to execute arbitrary code due to deserialization of untrusted data.

Is CVE-2026-116499 actively exploited?

Active exploitation of CVE-2026-116499 has not been confirmed.

What is the CVSS score for CVE-2026-116499?

CVE-2026-116499 has a CVSS v3 base score of 8.4 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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