BlackTreeCVE Intelligence
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Full vulnerability report · 2022
CVE-2022-28805High confidence

n/a — Out-of-bounds Read

Unknown · Unknown

9.1CriticalCVSS 3.1
Recommended action
Within 72 hours

Critical technical impact with a remotely reachable, unauthenticated path and a public exploit reference; no CISA KEV confirmation is currently recorded.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 3.00% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Unknown Unknown and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Alpine, Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

19 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · mainlua5.4Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.5.4.4-r4Alpine Security Database ↗Source updated 3 Oct 2026
Alpine v3.22v3.22 · mainlua5.4Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.5.4.4-r4Alpine Security Database ↗Source updated 3 Oct 2026
Alpine v3.21v3.21 · mainlua5.4Vendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.5.4.4-r4Alpine Security Database ↗Source updated 3 Oct 2026
Debian trixietrixie · sourcelua5.1Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian trixietrixie · sourcelua5.2Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian trixietrixie · sourcelua5.3Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian trixietrixie · sourcelua5.4Vendor fix publishedDebian records a fixed source-package version for this release.5.4.4-2Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelua5.1Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelua5.2Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelua5.3Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelua5.4Vendor fix publishedDebian records a fixed source-package version for this release.5.4.4-2Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelua5.1Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelua5.2Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelua5.3Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelua5.4Vendor fix publishedDebian records a fixed source-package version for this release.5.4.4-2Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelua5.1Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelua5.2Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelua5.3Not affectedDebian marks this release not affected (fixed-version marker 0).Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelua5.4Vendor fix publishedDebian records a fixed source-package version for this release.5.4.4-2Debian Security Tracker ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SCA-2025-0006 · CSAF 2.0 · revision 2 · finalSICK PSIRTVulnerability affecting picoScan and multiScan
2 known not affected

The vendor explicitly states that these products are not affected by this CVE.

  • SICK picoScan1XX all Firmware versions
  • SICK multiScan1XX all Firmware versions
Summary
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
Remediation
No remediation text is recorded.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2022-33243

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 72 hours

Critical technical impact with a remotely reachable, unauthenticated path and a public exploit reference; no CISA KEV confirmation is currently recorded.

Patch available
01

What, why and how

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

What

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

Why

The product reads data past the end, or before the beginning, of the intended buffer.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Out-of-bounds Read → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-125 ↗

CWE-125: Out-of-bounds Read. The product reads data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-125Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2023-2031Xerox FreeFlow Print Server: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.

Official advisory ↗
BSI · German · WID-SEC-2023-1542Red Hat OpenShift: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat OpenShift ausnutzen, um einen Denial of Service Zustand herbeizuführen, Informationen offenzulegen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2023-1185Red Hat Enterprise Linux: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen, seine Privilegien zu erweitern und Daten zu manipulieren.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220413Security Bulletin 13 Apr 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 13 Apr 2022, published on 13 April 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0218Multiples vulnérabilités dans les produits VMware

d?id=CVE-2022-26280 Référence CVE CVE-2022-26488 https://www.cve.org/CVERecord?id=CVE-2022-26488 Référence CVE CVE-2022-27774 https://www.cve.org/CVERecord?id=CVE-2022-27774 Référence CVE CVE-2022-27775 https://www.cve.org/CVERecord?id=CVE-2022-27775 Référence CVE CVE-2022-27776 https://www.cve.org/CVERecord?id=CVE-2022-27776 Référence CVE CVE-2022-27781 https://www.cve.org/CVERecord?id=CVE-2022-27781 Référence CVE CVE-2022-27782 https://www.cve.org/CVERecord?id=CVE-2022-27782 Référence CVE CVE-2022-28321 https://www.cve.org/CVERecord?id=CVE-2022-28321 Référence CVE CVE-2022-28391 https://www.cve.org/CVERecord?id=CVE-2022-28391 Référence CVE CVE-2022-28805 https://www.cve.org/CVERecord?id=CVE-2022-28805 Référence CVE CVE-2022-29155 https://www.cve.org/CVERecord?id=CVE-2022-29155 Référence CVE CVE-2022-29458 https://www.cve.org/CVERecord?id=CVE-2022-29458 Référence CVE CVE-2022-29526 https://www.cve.org/CVERecord?id=CVE-2022-29526 Référence CVE CVE-2022-2953 https://www.cve.org/CVERecord?id=CVE-2022-2953 Référence CVE CVE-2022-29824 https://www.cve.org/CVERecord?id=CVE-2022-29824 Référence CVE CVE-2022-3219 https://www.cve.org/CVERecord?id=CVE-2022-3219 Référence CVE CVE-2022-32205 https://www.cve.org/CVERecord?id=CVE-2022-32205 Référence CVE CVE-2022-32206 https://www.cve.org/CVERecord?id=CVE-

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1057Multiples vulnérabilités dans les produits VMware

d?id=CVE-2022-26878 Référence CVE CVE-2022-27672 https://www.cve.org/CVERecord?id=CVE-2022-27672 Référence CVE CVE-2022-27774 https://www.cve.org/CVERecord?id=CVE-2022-27774 Référence CVE CVE-2022-27775 https://www.cve.org/CVERecord?id=CVE-2022-27775 Référence CVE CVE-2022-27776 https://www.cve.org/CVERecord?id=CVE-2022-27776 Référence CVE CVE-2022-27779 https://www.cve.org/CVERecord?id=CVE-2022-27779 Référence CVE CVE-2022-27780 https://www.cve.org/CVERecord?id=CVE-2022-27780 Référence CVE CVE-2022-27781 https://www.cve.org/CVERecord?id=CVE-2022-27781 Référence CVE CVE-2022-27782 https://www.cve.org/CVERecord?id=CVE-2022-27782 Référence CVE CVE-2022-28805 https://www.cve.org/CVERecord?id=CVE-2022-28805 Référence CVE CVE-2022-29458 https://www.cve.org/CVERecord?id=CVE-2022-29458 Référence CVE CVE-2022-29824 https://www.cve.org/CVERecord?id=CVE-2022-29824 Référence CVE CVE-2022-30115 https://www.cve.org/CVERecord?id=CVE-2022-30115 Référence CVE CVE-2022-32205 https://www.cve.org/CVERecord?id=CVE-2022-32205 Référence CVE CVE-2022-32206 https://www.cve.org/CVERecord?id=CVE-2022-32206 Référence CVE CVE-2022-32207 https://www.cve.org/CVERecord?id=CVE-2022-32207 Référence CVE CVE-2022-32208 https://www.cve.org/CVERecord?id=CVE-2022-32208 Référence CVE CVE-2022-32221 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0969Multiples vulnérabilités dans les produits VMware

org/CVERecord?id=CVE-2022-28463 Référence CVE CVE-2022-2867 https://www.cve.org/CVERecord?id=CVE-2022-2867 Référence CVE CVE-2022-2868 https://www.cve.org/CVERecord?id=CVE-2022-2868 Référence CVE CVE-2022-2869 https://www.cve.org/CVERecord?id=CVE-2022-2869 Référence CVE CVE-2022-28738 https://www.cve.org/CVERecord?id=CVE-2022-28738 Référence CVE CVE-2022-28739 https://www.cve.org/CVERecord?id=CVE-2022-28739 Référence CVE CVE-2022-2874 https://www.cve.org/CVERecord?id=CVE-2022-2874 Référence CVE CVE-2022-2879 https://www.cve.org/CVERecord?id=CVE-2022-2879 Référence CVE CVE-2022-2880 https://www.cve.org/CVERecord?id=CVE-2022-2880 Référence CVE CVE-2022-28805 https://www.cve.org/CVERecord?id=CVE-2022-28805 Référence CVE CVE-2022-29217 https://www.cve.org/CVERecord?id=CVE-2022-29217 Référence CVE CVE-2022-2923 https://www.cve.org/CVERecord?id=CVE-2022-2923 Référence CVE CVE-2022-2928 https://www.cve.org/CVERecord?id=CVE-2022-2928 Référence CVE CVE-2022-2929 https://www.cve.org/CVERecord?id=CVE-2022-2929 Référence CVE CVE-2022-29458 https://www.cve.org/CVERecord?id=CVE-2022-29458 Référence CVE CVE-2022-29526 https://www.cve.org/CVERecord?id=CVE-2022-29526 Référence CVE CVE-2022-2953 https://www.cve.org/CVERecord?id=CVE-2022-2953 Référence CVE CVE-2022-2980 https://www.cve.org/CVERecord?id=CVE-2022-

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-007716Lua.org の Lua 他複数ベンダの製品における境界外読み取りに関する脆弱性

Lua.org の Lua 他複数ベンダの製品には、境界外読み取りに関する脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
n/a
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 8 Apr 2022 · Last source change 3 Aug 2024, 06:03 UTC · CWE-125 · Out-of-bounds Read

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2022-33243
Product sourceUnavailable
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: added remediation: sick.com/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf; removed remediation: sick.com/psirt.
    Before
    remediation: sick.com/psirt
    After
    remediation: sick.com/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
    SICK PSIRT ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2022-33243↗Vendor CSAF · SICK PSIRT↗Patch or update reference↗Public exploit reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2022-28805 · cve.blacktree.nl