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CVE-2023-28500

29
FAUCET Score

CVE-2023-28500 is a critical insecure deserialization vulnerability in Adobe LiveCycle ES4 version 11.0 and earlier, potentially affecting later versions if running Java 7u21 or older. Unauthenticated remote attackers can achieve operating system code execution by submitting specially crafted Java serialized objects. With a CVSS score of 9.8, this vulnerability allows for complete compromise of confidentiality, integrity, and availability with low attack complexity. Despite its critical severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, likely due to the affected product being end-of-life.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.0.1CPE matchmatch criteria
cpe:2.3:a:adobe:livecycle_es4:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.40%
Probability of exploitation in next 30 days
EPSS Percentile
69.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 56th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

coastalsecurity.gitbook.io / critical-vulnerability-adobe-livecycle-es4v11.0