CVE-2026-34640: Media Encoder versions 26.0.2, 25.6.4 and earlier are affected by an Integer Overflow or Wraparound vulnerabil

Routine

HIGH 7.8UPGRADE

CVE-2026-34640 is a high-severity flaw (CVSS 7.8) affecting media encoder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Media Encoder versions 26.0.2, 25.6.4 and earlier are affected by an Integer Overflow or Wraparound 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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-190
Published	2026-05-12
Last modified	2026-10-26

Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-12 18:17 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

adobe media encoder UPGRADE

Affected: < 25.6.5 · >= 26.0 and < 26.2

Fixed in: 25.6.5, 26.2

Safe to downgrade to: a release before 26.0

1. Check installed version

apt-cache policy media-encoder || rpm -q media-encoder || media-encoder --version

2. UPGRADE to 25.6.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade media-encoder

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade media-encoder

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 26.0 (Debian / Ubuntu)

apt-cache madison media-encoder sudo apt install media-encoder=<VERSION_BEFORE_26.0> sudo apt-mark hold media-encoder

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list media-encoder sudo dnf downgrade media-encoder-<VERSION_BEFORE_26.0> sudo dnf versionlock add media-encoder

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34640?

media encoder: upgrade to 25.6.5, 26.2. Exact commands for each OS are on this page.

Is CVE-2026-34640 being exploited?

CVE-2026-34640 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34640 affect?

CVE-2026-34640 affects media encoder. Severity is high (CVSS 7.8). Media Encoder versions 26.0.2, 25.6.4 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user int

How urgent is CVE-2026-34640?

Priority 29/100. High severity

Related CVEs

CVE-2026-47971 HIGH 7.8 UPGRADE Media Encoder is affected by a Stack-based Buffer Overflow vulnerability that could result in arbitrary code e
CVE-2026-47976 HIGH 7.8 UPGRADE Media Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code executio
CVE-2026-48366 HIGH 7.8 UPGRADE Media Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code executio
CVE-2026-48370 HIGH 7.8 UPGRADE Media Encoder is affected by an out-of-bounds write vulnerability that could result in arbitrary code executio
CVE-2026-47979 MEDIUM 5.5 UPGRADE Media Encoder is affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive me

References

← Back to latest CVEs