BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2023
CVE-2023-29175High confidence

Fortinet FortiOS — Improper Certificate Validation

Fortinet · FortiOS

4.4MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
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
SSA-366067 · CSAF 2.0 · revision 8 · finalSiemens ProductCERTSSA-366067: Multiple Vulnerabilities in Fortigate NGFW Before V7.4.1 on RUGGEDCOM APE1808 Devices
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • RUGGEDCOM APE1808
Summary
An improper certificate validation vulnerability [CWE-295] in FortiOS 6.2 all versions, 6.4 all versions, 7.0.0 through 7.0.10, 7.2.0 and FortiProxy 1.2 all versions, 2.0 all versions, 7.0.0 through 7.0.9, 7.2.0 through 7.2.3 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the vulnerable device and the remote FortiGuard's map server.
Remediation
Update Fortigate NGFW to V7.4.1. Contact customer support to receive patch and update information.
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2023-32776

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

An improper certificate validation vulnerability [CWE-295] in FortiOS 6.2 all versions, 6.4 all versions, 7.0.0 through 7.0.10, 7.2.0 and FortiProxy 1.2 all versions, 2.0 all versions, 7.0.0 through 7.0.9, 7.2.0 through 7.2.3 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the vulnerable device and the remote FortiGuard's map server.

What

An improper certificate validation vulnerability [CWE-295] in FortiOS 6.2 all versions, 6.4 all versions, 7.0.0 through 7.0.10, 7.2.0 and FortiProxy 1.2 all versions, 2.0 all versions, 7.0.0 through 7.0.9, 7.2.0 through 7.2.3 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the vulnerable device and the remote FortiGuard's map server.

Why

The product does not validate, or incorrectly validates, a certificate.

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

An improper certificate validation vulnerability [CWE-295] in FortiOS 6.2 all versions, 6.4 all versions, 7.0.0 through 7.0.10, 7.2.0 and FortiProxy 1.2 all versions, 2.0 all versions, 7.0.0 through 7.0.9, 7.2.0 through 7.2.3 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the vulnerable device and the remote FortiGuard's map server.

Why

The product does not validate, or incorrectly validates, a certificate.

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.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Certificate Validation → 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
High: exploitation depends on specific conditions
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-295 ↗

CWE-295: Improper Certificate Validation. The product does not validate, or incorrectly validates, a certificate.

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:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:X/RC:R

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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.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.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
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-295
A

Official authority intelligence

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

Cyber Security Agency of Singapore · English · CSA-SB-20230614Security Bulletin 14 Jun 2023

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 14 Jun 2023, published on 14 June 2023. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0203Multiples vulnérabilités dans les produits Siemens

d?id=CVE-2022-45861 Référence CVE CVE-2023-22639 https://www.cve.org/CVERecord?id=CVE-2023-22639 Référence CVE CVE-2023-22640 https://www.cve.org/CVERecord?id=CVE-2023-22640 Référence CVE CVE-2023-22641 https://www.cve.org/CVERecord?id=CVE-2023-22641 Référence CVE CVE-2023-25610 https://www.cve.org/CVERecord?id=CVE-2023-25610 Référence CVE CVE-2023-26207 https://www.cve.org/CVERecord?id=CVE-2023-26207 Référence CVE CVE-2023-27997 https://www.cve.org/CVERecord?id=CVE-2023-27997 Référence CVE CVE-2023-28001 https://www.cve.org/CVERecord?id=CVE-2023-28001 Référence CVE CVE-2023-28002 https://www.cve.org/CVERecord?id=CVE-2023-28002 Référence CVE CVE-2023-29175 https://www.cve.org/CVERecord?id=CVE-2023-29175 Référence CVE CVE-2023-29178 https://www.cve.org/CVERecord?id=CVE-2023-29178 Référence CVE CVE-2023-29179 https://www.cve.org/CVERecord?id=CVE-2023-29179 Référence CVE CVE-2023-29180 https://www.cve.org/CVERecord?id=CVE-2023-29180 Référence CVE CVE-2023-29181 https://www.cve.org/CVERecord?id=CVE-2023-29181 Référence CVE CVE-2023-29183 https://www.cve.org/CVERecord?id=CVE-2023-29183 Référence CVE CVE-2023-33301 https://www.cve.org/CVERecord?id=CVE-2023-33301 Référence CVE CVE-2023-33305 https://www.cve.org/CVERecord?id=CVE-2023-33305 Référence CVE CVE-2023-33306 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0451Multiples vulnérabilités dans les produits Fortinet

d?id=CVE-2022-43953 Référence CVE CVE-2023-22633 https://www.cve.org/CVERecord?id=CVE-2023-22633 Référence CVE CVE-2023-22639 https://www.cve.org/CVERecord?id=CVE-2023-22639 Référence CVE CVE-2023-25609 https://www.cve.org/CVERecord?id=CVE-2023-25609 Référence CVE CVE-2023-26204 https://www.cve.org/CVERecord?id=CVE-2023-26204 Référence CVE CVE-2023-26207 https://www.cve.org/CVERecord?id=CVE-2023-26207 Référence CVE CVE-2023-26210 https://www.cve.org/CVERecord?id=CVE-2023-26210 Référence CVE CVE-2023-27997 https://www.cve.org/CVERecord?id=CVE-2023-27997 Référence CVE CVE-2023-28000 https://www.cve.org/CVERecord?id=CVE-2023-28000 Référence CVE CVE-2023-29175 https://www.cve.org/CVERecord?id=CVE-2023-29175 Référence CVE CVE-2023-29178 https://www.cve.org/CVERecord?id=CVE-2023-29178 Référence CVE CVE-2023-29179 https://www.cve.org/CVERecord?id=CVE-2023-29179 Référence CVE CVE-2023-29180 https://www.cve.org/CVERecord?id=CVE-2023-29180 Référence CVE CVE-2023-29181 https://www.cve.org/CVERecord?id=CVE-2023-29181 Référence CVE CVE-2023-33305 https://www.cve.org/CVERecord?id=CVE-2023-33305 Gestion détaillée du document le 13 juin 2023 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.f

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2023-022803フォーティネットの FortiProxy および FortiOS における証明書検証に関する脆弱性

フォーティネットの FortiProxy および FortiOS には、証明書検証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
RUGGEDCOM APE1808
Fixed
Action
Update Fortigate NGFW to V7.4.1. Contact customer support to receive patch and update information.
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 13 Jun 2023 · Last source change 14 Jan 2026, 13:45 UTC · CWE-295 · Improper Certificate Validation

CVE recordCVE.org · 5.2
CVSS sourceCNA
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-2023-32776
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2023-32776↗Vendor CSAF · Siemens ProductCERT↗CVE authority or vendor 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-2023-29175 · cve.blacktree.nl