CVE-2021-32298Public exploitNetwork attack vector

Code execution via out-of-bounds error-string read

Published Sep 20, 2021 · Updated Aug 3, 2024

Global-buffer overflow in libiff through 20190123 allows attackers to execute code when a crafted IFF file is parsed. IFF_errorId reads beyond a one-byte empty-string object while formatting an invalid chunk identifier, as demonstrated by the public AddressSanitizer trace. The demonstrated path requires an application or user to process an attacker-supplied IFF file; the proof of concept establishes a process abort, while the CVE record asserts code execution.

CVSS severity8.8
High
EPSS probability1.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Global-buffer overflow in libiff through 20190123 allows attackers to execute code when a crafted IFF file is parsed. IFF_errorId reads beyond a one-byte empty-string object while formatting an invalid chunk identifier, as demonstrated by the public AddressSanitizer trace. The demonstrated path requires an application or user to process an attacker-supplied IFF file; the proof of concept establishes a process abort, while the CVE record asserts code execution.

The record

CVE
CVE-2021-32298
Published
Sep 20, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

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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