CVE-2023-28753Network attack vector

Heap corruption via unchecked fragment offset

Published May 18, 2023 · Updated Jan 21, 2025

Integer overflow in Meta netconsd before 0.2 allows remote attackers to corrupt heap memory through crafted fragmented packets. The parse_packet function checked the offset-plus-text length but failed to reject an offset at or beyond the total fragment length, allowing the addition to wrap before attacker-controlled data was copied. The unauthenticated UDP listener processes the packet without user interaction, exposing the daemon to a crash or attacker-directed memory modification.

CVSS severity9.8
Critical
EPSS probability1.85%
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 Meta netconsd before 0.2 allows remote attackers to corrupt heap memory through crafted fragmented packets. The parse_packet function checked the offset-plus-text length but failed to reject an offset at or beyond the total fragment length, allowing the addition to wrap before attacker-controlled data was copied. The unauthenticated UDP listener processes the packet without user interaction, exposing the daemon to a crash or attacker-directed memory modification.

The record

CVE
CVE-2023-28753
Published
May 18, 2023
Updated
Jan 21, 2025
Vendor
Meta
Product
netconsd
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 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=0.0 <0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meta · netconsdversion=0.0 <0.2

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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