CVE-2021-44696

Information disclosure via JPEG buffer over-read

Published Jul 12, 2023 · Updated Mar 5, 2025

Out-of-bounds read in Adobe Prelude before 22.1.1 allows remote attackers to disclose process memory through a crafted JPEG file. The JPEG parser fails to validate user-supplied image data before reading past the end of an allocated buffer. A victim must open the malicious file or visit a page that supplies it; the read can expose memory and aid ASLR bypass, without direct integrity or availability impact.

CVSS severity3.3
Low
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Adobe Prelude before 22.1.1 allows remote attackers to disclose process memory through a crafted JPEG file. The JPEG parser fails to validate user-supplied image data before reading past the end of an allocated buffer. A victim must open the malicious file or visit a page that supplies it; the read can expose memory and aid ASLR bypass, without direct integrity or availability impact.

The record

CVE
CVE-2021-44696
Published
Jul 12, 2023
Updated
Mar 5, 2025
Vendor
Adobe
Product
Adobe Prelude
Classifications
CWE-125, CAPEC-540, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=22.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Preludeversion=0 <=22.0

Published CVSS scores

3.3Adobe CNACVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
4.0AdobeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
5.5NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CAPEC-540Overread Buffers
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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