CVE-2026-48373: Acrobat Reader is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code e

Routine

HIGH 7.8UPGRADEUPGRADEUPGRADE

CVE-2026-48373 is a high-severity flaw (CVSS 7.8) affecting acrobat, acrobat dc, acrobat reader dc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Acrobat Reader is affected by a Heap-based Buffer Overflow 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	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-07-17
Last modified	2026-10-24

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

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-17 20:17 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

adobe acrobat UPGRADE

Affected: < 24.001.30383

Fixed in: 24.001.30383

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy acrobat || rpm -q acrobat || acrobat --version

2. UPGRADE to 24.001.30383 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade acrobat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade acrobat

Note

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

adobe acrobat dc UPGRADE

Affected: >= 15.008.20082 and < 26.001.21662

Fixed in: 26.001.21662

Safe to downgrade to: a release before 15.008.20082

1. Check installed version

apt-cache policy acrobat-dc || rpm -q acrobat-dc || acrobat-dc --version

2. UPGRADE to 26.001.21662 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade acrobat-dc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade acrobat-dc

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 15.008.20082 (Debian / Ubuntu)

apt-cache madison acrobat-dc sudo apt install acrobat-dc=<VERSION_BEFORE_15.008.20082> sudo apt-mark hold acrobat-dc

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

dnf --showduplicates list acrobat-dc sudo dnf downgrade acrobat-dc-<VERSION_BEFORE_15.008.20082> sudo dnf versionlock add acrobat-dc

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.

adobe acrobat reader dc UPGRADE

Affected: >= 15.008.20082 and < 26.001.21662

Fixed in: 26.001.21662

Safe to downgrade to: a release before 15.008.20082

1. Check installed version

apt-cache policy acrobat-reader-dc || rpm -q acrobat-reader-dc || acrobat-reader-dc --version

2. UPGRADE to 26.001.21662 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade acrobat-reader-dc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade acrobat-reader-dc

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 15.008.20082 (Debian / Ubuntu)

apt-cache madison acrobat-reader-dc sudo apt install acrobat-reader-dc=<VERSION_BEFORE_15.008.20082> sudo apt-mark hold acrobat-reader-dc

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

dnf --showduplicates list acrobat-reader-dc sudo dnf downgrade acrobat-reader-dc-<VERSION_BEFORE_15.008.20082> sudo dnf versionlock add acrobat-reader-dc

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-2026-48373?

acrobat: upgrade to 24.001.30383; acrobat dc: upgrade to 26.001.21662; acrobat reader dc: upgrade to 26.001.21662. Exact commands for each OS are on this page.

Is CVE-2026-48373 being exploited?

CVE-2026-48373 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-2026-48373 affect?

CVE-2026-48373 affects acrobat, acrobat dc, acrobat reader dc. Severity is high (CVSS 7.8). Acrobat Reader is affected by a Heap-based Buffer Overflow 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 mal

How urgent is CVE-2026-48373?

Priority 34/100. High severity

Software pages

Adobe Acrobat vulnerabilities

References

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