Media Encoder | Out-of-bounds Write (CWE-787)
- Exploited
- No known exploitation
- Fix
- No fix listed
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Adobe Media Encoder 26.5.2 and earlier is affected. Adobe Media Encoder 25.6.6 and earlier is affected. Runs on Windows and macOS.
- Last modified
- Whether it needs action now or is a reference record, by fixed rules, with why. Last checked is when cve.now last re-read it.What do these mean? →
- Reference
- Last checked
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 19/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Media Encoder has an out-of-bounds write flaw that lets an attacker run arbitrary code with the privileges of the current user. The attacker must reach it locally and needs the victim to open a malicious file, so no login is required, but the user has to be tricked into opening the file.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original 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.
Who should check
Teams running Adobe Media Encoder 26.5.2 and earlier or 25.6.6 and earlier on Windows or macOS.
cve.now Index
- Exploitation0/40No signal
- Exposure5/25Specific setups only
- Reach?/20Unknown. No tracked technology or package matched
- Severity8.8/10CVSS 7.8, total technical impact per CISA
- No patch5/5No patch listed yet
What would change the score
- Would score about 69 if added to CISA KEV
- Would score about 64 if CISA's SSVC rates exploitation active
- Would score about 29 if CISA's SSVC rates it automatable
What to do
Check whether your setup matches what the bug needs.
Adobe Media Encoder 26.5.2 and earlier is affected. Adobe Media Encoder 25.6.6 and earlier is affected. Runs on Windows and macOS.Workaround: The checked facts do not list a workaround. No fix or mitigation is named in the facts, so check the Adobe advisory for updates.
Check your systems with an agent
Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.
Check whether my systems are affected by CVE-2026-113543 (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-2026-113543 (entry last updated 2026-11-10): Affected: - Adobe Media Encoder: through 26.5.2 - Adobe Media Encoder: through 25.6.6 Fixed versions: none listed yet. Conditions (all must be true for the bug to be hit): - Adobe Media Encoder 26.5.2 and earlier is affected. (source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html) - Adobe Media Encoder 25.6.6 and earlier is affected. (source: https://www.adobe.com/trust/security/products/media-encoder/apsb26-103.html) - Runs on Windows and macOS. (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-2026-113543 is not listed as of cve.now's last read. This KEV status is for CVE-2026-113543 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-2026-113543 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-2026-113543.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
- First seen by cve.now
Affected versions
- Adobe Media Encoder
through 26.5.2
- Adobe Media Encoder
through 25.6.6
Evidence 3
Vendor advisory · 1
Establishes: Affected and fixed versions.
- Advisory
CVE record · 2
Establishes: The identifier and description.
- Record
- Record
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-113543
Is CVE-2026-113543 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: cve.now feed data
What does this mean?
The bug is an out-of-bounds write, meaning the program can write data outside the memory area it is supposed to use. The advisory's stated impact is arbitrary code execution.Source: adobe.com
Which versions are affected by CVE-2026-113543?
Media Encoder: through 26.5.2. Media Encoder: through 25.6.6.Source: cve.now feed data
Am I affected, and how do I check?
Adobe Media Encoder 26.5.2 and earlier, and Adobe Media Encoder 25.6.6 and earlier, are listed as affected, and the listed setup runs on Windows and macOS. Compare the installed Media Encoder version against these version limits.Source: adobe.com
How do I fix CVE-2026-113543?
The checked facts do not list a fixed version, so no upgrade target can be named from them. Check the Adobe advisory for a fixed release.Source: adobe.com
What if there's no patch?
The checked facts do not list a workaround. No fix or mitigation is named in the facts, so check the Adobe advisory for updates.Source: adobe.com