CVE-2023-35176

Denial of service via backup restore buffer overflow

Published Jun 30, 2023 · Updated Dec 4, 2024

Buffer overflow in HP LaserJet Pro firmware allows remote attackers to cause denial of service through the backup and restore web feature. The affected code mishandles backup or restore input in a buffer operation, but HP has not disclosed the input, buffer, or function involved. The attacker requires adjacent-network access and no privileges; HP does not specify whether interruption manifests as a hang, crash, or reboot.

CVSS severity8.8
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Buffer overflow in HP LaserJet Pro firmware allows remote attackers to cause denial of service through the backup and restore web feature. The affected code mishandles backup or restore input in a buffer operation, but HP has not disclosed the input, buffer, or function involved. The attacker requires adjacent-network access and no privileges; HP does not specify whether interruption manifests as a hang, crash, or reboot.

The record

CVE
CVE-2023-35176
Published
Jun 30, 2023
Updated
Dec 4, 2024
Vendor
HP Inc.
Product
HP LaserJet Pro
Classifications
CWE-120, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=See HP Security Bulletin reference for affected versions.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

HP Inc. · HP LaserJet Proversion=See HP Security Bulletin reference for affected versions.

Published CVSS scores

8.8HP Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:A/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo