CVE-2022-37454Public exploitNetwork attack vector

Code execution via queued sponge length overflow

Published Oct 21, 2022 · Updated May 8, 2025

Integer-to-buffer overflow in the XKCP SHA-3 reference implementation before commit fdc6fef allows attackers to execute arbitrary code. SpongeAbsorb and SpongeSqueeze cast a queued size_t length to unsigned int and add it to byteIOIndex, allowing the bounds comparison to wrap before an oversized buffer operation. Reaching the flaw requires a queued partial input or output of at least 2^32 - 200 bytes; demonstrated outcomes include a crash or infinite loop, while crafted files can enable code execution or invalidate hash properties.

CVSS severity9.8
Critical
EPSS probability5.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer-to-buffer overflow in the XKCP SHA-3 reference implementation before commit fdc6fef allows attackers to execute arbitrary code. SpongeAbsorb and SpongeSqueeze cast a queued size_t length to unsigned int and add it to byteIOIndex, allowing the bounds comparison to wrap before an oversized buffer operation. Reaching the flaw requires a queued partial input or output of at least 2^32 - 200 bytes; demonstrated outcomes include a crash or infinite loop, while crafted files can enable code execution or invalidate hash properties.

The record

CVE
CVE-2022-37454
Published
Oct 21, 2022
Updated
May 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-680, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 21, 2022CVE publishedPublication date reported by the CVE source.
  2. May 8, 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?

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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-680Integer Overflow to Buffer Overflow
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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