---
id: "CVE-2026-113543"
page: "https://infrastack.ai/live/CVE-2026-113543"
kind: "vulnerability"
aliases: ["CVE-2026-113543"]
title: "Adobe Media Encoder: out-of-bounds write lets a malicious file run code"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "Adobe Media Encoder", "fixed": ["26.5.3", "27.0"], "affected": "<= 26.5.2, <= 25.6.6", "ecosystem": "vendor"}]
ecosystems: []
tags: ["adobe-media-encoder", "creative-cloud", "desktop", "macos", "other", "windows"]
not_affected_if: ["file-not-opened", "updated-to-26.5.3-or-27.0"]
published_at: "2026-11-10T21:18:47+00:00"
first_seen_at: "2026-11-10T21:46:10+00:00"
updated_at: "2026-11-10T22:41:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113543", "first_seen_at": "2026-11-10T21:46:10+00:00"}, {"source": "analyst", "url": "https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html", "first_seen_at": "2026-11-10T22:41:27+00:00", "cites": ["https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html", "https://www.zerodayinitiative.com/blog/2026/11/10/the-november-2026-security-update-review"]}]
exploit_sources: []
---

# Adobe Media Encoder: out-of-bounds write lets a malicious file run code

Link for people: https://infrastack.ai/live/CVE-2026-113543 (this .md is for agents)

Adobe Media Encoder has an out-of-bounds write (CWE-787) that a crafted file can trigger, giving code execution as the current user. The victim has to open the malicious file. Adobe fixed it in APSB26-103 and is not aware of exploitation.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Adobe Media Encoder affected <= 26.5.2, <= 25.6.6 fixed 26.5.3, 27.0

## How to check

Open Adobe Media Encoder > About (or Creative Cloud desktop app > Apps) and read the version. Affected: 26.5.2 and earlier, and 25.6.6 and earlier, on Windows and macOS.

## Fix

Update Adobe Media Encoder to 27.0 (from 26.5.2 or earlier) or to 26.5.3 (on the 26.x line); 25.6.6 and earlier is also listed as affected, move to 26.5.3 or 27.0. Download via Download Center.

## Timeline

- 2026-11-10T21:46:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113543
- 2026-11-10T22:41:27+00:00 analyst https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html — Adobe APSB26-103 (Nov 10 2026, priority 3) read directly; lists this CVE, affected/fixed versions; Adobe aware of no exploits. No PoC checked beyond bulletin.

## Documents

- [advisory] Adobe Security Bulletin APSB26-103: Media Encoder https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html
- [mentions] ZDI: November 2026 Security Update Review https://www.zerodayinitiative.com/blog/2026/11/10/the-november-2026-security-update-review

## From the sources

Media Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_