LiveActive security incident?Get immediate response
CVE Record

CVE-2021-21832: A memory corruption vulnerability exists in the ISO Parsing functionality of Disc Soft Ltd Deamon Tools Pro...

A memory corruption vulnerability exists in the ISO Parsing functionality of Disc Soft Ltd Deamon Tools Pro 8.3.0.0767. A specially crafted malformed file can lead to an out-of-bounds write. An attacker can provide a malicious file to trigger this vulnerability.

HighCVSS 8.1Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This CVE is a high-severity file-parsing flaw in Disc Soft Ltd Deamon Tools Pro 8.3.0.0767. A malformed ISO file can corrupt memory and cause an out-of-bounds write. Business risk is highest where users handle untrusted disk images from email, web downloads, vendors, or investigations.

Executive priority

Treat this as a targeted endpoint risk, not an internet-wide emergency. Prioritize remediation where disk images are handled from external parties or security analysis workflows.

Technical view

The source describes memory corruption in ISO parsing, mapped to CWE-680, where crafted malformed input can lead to an out-of-bounds write. CVSS 3.0 is 8.1 with high confidentiality, integrity, and availability impact. The affected version named in the bundle is Deamon Tools Pro 8.3.0.0767.

Likely exposure

Exposure is likely limited to endpoints or analyst workstations running the named Deamon Tools Pro version and processing ISO files. The bundle does not identify other affected products or versions.

Exploitation context

The source says an attacker can provide a malicious file to trigger the issue. KEV is false, and the bundle provides no evidence of active exploitation or public weaponization.

Researcher notes

Evidence is narrow but credible: one affected version, ISO parsing, out-of-bounds write, CWE-680, and CVSS 8.1. The bundle does not name a patch level, workaround, exploit, or broader version range.

Mitigation direction

  • Identify and prioritize systems running Deamon Tools Pro 8.3.0.0767.
  • Check Disc Soft and Talos guidance for fixed versions or vendor workarounds.
  • Avoid opening ISO files from untrusted or unverified sources.
  • Restrict ISO handling to isolated systems where business workflows require it.
  • Use endpoint controls to monitor crashes or suspicious disk-image handling.

Validation and detection

  • Confirm installed Deamon Tools Pro versions through software inventory.
  • Review which teams process ISO files from external sources.
  • Check whether ISO files are associated with the affected application.
  • Look for recent application crashes during disk-image parsing.
  • Verify remediation against vendor or Talos guidance once identified.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-680: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-21832 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.1 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.1CVSS 3.0HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

8.1High
CVSS 3.0 vector shape for CVE-2021-21832Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aDiscDisc Soft Ltd Deamon Tools Pro 8.3.0.0767Listed
Weakness

CWE details

CWE-680

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.