CVE-2022-48468

Process interruption via unchecked submessage length subtraction

Published Apr 13, 2023 · Updated Feb 13, 2025

Integer overflow in protobuf-c before 1.4.1 allows local users to interrupt a consuming process through a malformed required submessage. In parse_required_member, a prefix longer than the field length makes unsigned len - pref_len wrap before the oversized value is passed to protobuf_c_message_unpack. The input must reach a locally accessible consumer using the affected parser; published assessments identify availability impact only, but the exact failure mode is undisclosed.

CVSS severity5.5
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in protobuf-c before 1.4.1 allows local users to interrupt a consuming process through a malformed required submessage. In parse_required_member, a prefix longer than the field length makes unsigned len - pref_len wrap before the oversized value is passed to protobuf_c_message_unpack. The input must reach a locally accessible consumer using the affected parser; published assessments identify availability impact only, but the exact failure mode is undisclosed.

The record

CVE
CVE-2022-48468
Published
Apr 13, 2023
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499Endpoint Denial of Service

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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