CISA KEV · Known exploitedHigh

CVE-2023-21608

Adobe Acrobat and Reader

Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by a Use After Free 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.

CVSS
7.8
EPSS
61.5%
99.1% percentile
CISA KEV
Listed
Published
2023.01.19
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability61.5%
Technical severityCVSS 7.8

Vulnerability overview

Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by a Use After Free 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.

Affected product and versions

Product
Adobe Acrobat and Reader
Affected versions
unspecified, >= 15.008.20082 <= 22.003.20282, >= 15.008.20082 <= 22.003.20281, >= 20.001.30005 <= 20.005.30418
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due date: 2023.10.31
  1. 1
    Identify

    Confirm that Adobe Acrobat and Reader and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-416
KEV added
2023.10.10
Ransomware use
미확인
CVE-2023-21608 — Adobe Acrobat and Reader | SECUFOCUS NOW