# CVE-2026-0263: PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

> Unauthenticated attackers can execute arbitrary code with elevated privileges or cause denial of service via buffer overflow in PAN-OS IKEv2 processing.

- **Severity:** High 7.2 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:Y/R:U/V:C/RE:H/U:Red`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 May 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-xqxf-q4xj-jxh3

## What is CVE-2026-0263?

CVE-2026-0263 is a high-severity memory corruption vulnerability in Paloaltonetworks Pan-Os, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A buffer overflow vulnerability in the IKEv2 processing of Palo Alto Networks PAN-OS® software allows an unauthenticated network-based attacker to execute arbitrary code with elevated privileges on the firewall, or cause a denial of service (DoS) condition.

Panorama, Cloud NGFW, and Prisma® Access are not impacted by these vulnerabilities.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-0263?

It affects 1 product.


Products: Paloaltonetworks Pan-Os.

## How do I fix CVE-2026-0263?

No fix has been published for CVE-2026-0263 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-0263 being exploited?

There is no known exploitation of CVE-2026-0263 in the wild and no public exploit code.

## Other vulnerabilities in Paloaltonetworks Pan-Os

- [CVE-2024-3400](https://insights.sbomify.com/CVE-2024-3400/): Palo Alto Networks PAN-OS Command Injection (critical 10.0, exploited in the wild)
- [CVE-2020-2021](https://insights.sbomify.com/CVE-2020-2021/): Palo Alto Networks PAN-OS Authentication Bypass (critical 10.0, exploited in the wild)
- [CVE-2017-15944](https://insights.sbomify.com/CVE-2017-15944/): Palo Alto Networks PAN-OS Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2026-0300](https://insights.sbomify.com/CVE-2026-0300/): Palo Alto Networks PAN-OS Out-of-bounds Write (critical 9.3, exploited in the wild)
- [CVE-2024-0012](https://insights.sbomify.com/CVE-2024-0012/): Palo Alto Networks PAN-OS Management Interface Authentication Bypass (critical 9.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0263 and fix it if it is affected.

What it is: CVE-2026-0263 is a high-severity memory corruption vulnerability in Paloaltonetworks Pan-Os, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-0263 in the wild and no public exploit code.

Affected product: Paloaltonetworks Pan-Os. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-0263/ (Markdown: https://insights.sbomify.com/CVE-2026-0263/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0263
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0263
- OSV: https://osv.dev/vulnerability/CVE-2026-0263

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-0263/
Summaries are generated and may contain mistakes; the official description above is the record.