# CVE-2026-23786: Samsung Exynos DRM HDR Driver race condition in DPU

Source: https://junglewise.ai/threats/cve-2026-23786-samsung-exynos-drm-hdr-driver-race-condition-in-dpu  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-14. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-23786 · Severity: low · CVSS 2.8 · Published 2026-09-14

Samsung's Exynos mobile processors include a display processing unit (DPU) with a DRM HDR driver that is vulnerable to a race condition. An attacker can exploit this timing vulnerability to cause memory access errors, potentially crashing the system or causing unpredictable behavior that affects device stability and user experience.

Technologies: [Samsung Exynos 2600](https://junglewise.ai/threats/technologies/exynos-2600), [Samsung Exynos 1280](https://junglewise.ai/threats/technologies/exynos-1280), [Samsung Exynos 1380](https://junglewise.ai/threats/technologies/exynos-1380), [Samsung Exynos 1480](https://junglewise.ai/threats/technologies/exynos-1480), [Samsung Exynos 1580](https://junglewise.ai/threats/technologies/exynos-1580), [Samsung Exynos 1680](https://junglewise.ai/threats/technologies/exynos-1680), [Samsung Exynos 2200](https://junglewise.ai/threats/technologies/exynos-2200), [Samsung Exynos 2400](https://junglewise.ai/threats/technologies/exynos-2400), [Samsung Exynos 2500](https://junglewise.ai/threats/technologies/exynos-2500). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-23786 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-23786 being exploited in the wild.

**How severe is CVE-2026-23786?** Low severity, with a CVSS score of 2.8, published 14 September 2026.

**Which products and versions are affected?** Samsung Exynos 2600 all versions; Samsung Exynos 1280 all versions; Samsung Exynos 1380 all versions; Samsung Exynos 1480 all versions; and 5 more.

**Is there a fix for CVE-2026-23786?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-23786 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-23786?** Check whether you run Samsung Exynos 2600, Samsung Exynos 1280, Samsung Exynos 1380 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A time-of-check-time-of-use (TOCTOU) race condition exists in the Exynos DRM HDR Driver component of the DPU (Display Processing Unit). The vulnerability allows an attacker to trigger a heap overflow through careful timing manipulation between validation and use of memory addresses. The attack likely requires local access to trigger driver operations. Exploitation results in memory access errors that can cause kernel crashes or system instability. Samsung has acknowledged the issue and patches are expected to be available through security updates.

## Affected products

- Samsung Exynos 1280 all versions
- Samsung Exynos 2200 all versions
- Samsung Exynos 1380 all versions
- Samsung Exynos 1480 all versions
- Samsung Exynos 2400 all versions
- Samsung Exynos 1580 all versions
- Samsung Exynos 2500 all versions
- Samsung Exynos 1680 all versions
- Samsung Exynos 2600 all versions

## Timeline

- 2026-09-14: disclosed
- 2025-12-24: other: Reported date

## References

- [https://semiconductor.samsung.com/support/quality-support/product-security-updates/](https://semiconductor.samsung.com/support/quality-support/product-security-updates/)
- [https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2026-23786/](https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2026-23786/)

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