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Full vulnerability report · 2025
CVE-2024-53704High confidence

SonicWall SonicOS SSLVPN Improper Authentication Vulnerability

SonicWall · SonicOS

9.8CriticalCVSS 3.1
Recommended action
Protect now

CISA confirms exploitation in the wild and lists 2025-03-11 as the remediation due date.

Fix not verified
R
Operational reassessment

Published severity in operational context

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

Evidence used

  • CISA confirms exploitation in the wild.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 95.13% for the current model date.

Compensating controls

  • 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 SonicWall SonicOS and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  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.

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-2024-52037

CISA KEV mirrored by ENISA

An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows a remote attacker to bypass authentication.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 18 Feb 2025. Evidence sources: cisa_kev.
ENISA score
8.2 · CVSS 3.1
Advisory evidence
2 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_ncscnl · NCSC-2025-0004Kwetsbaarheden verholpen in SonicWall SonicOS
Recommended actionProtect now

CISA confirms exploitation in the wild and lists 2025-03-11 as the remediation due date.

Fix not verified
01

What, why and how

SonicWall SonicOS contains an improper authentication vulnerability in the SSLVPN authentication mechanism that allows a remote attacker to bypass authentication.

What

SonicWall SonicOS contains an improper authentication vulnerability in the SSLVPN authentication mechanism that allows a remote attacker to bypass authentication.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

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

SonicWall SonicOS contains an improper authentication vulnerability in the SSLVPN authentication mechanism that allows a remote attacker to bypass authentication.

Why

The affected component does not establish the requesting party's identity reliably before granting access.

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.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2025-02-18. Known ransomware campaign use is recorded.

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 Authentication → 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-287 ↗

CWE-287: Improper Authentication. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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:H/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.IHighIntegrity impact: A successful attack can cause a major loss.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-287CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2024-52037Known-exploited evidence recorded

An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows a remote attacker to bypass authentication.

Official EUVD record ↗
BSI · German · WID-SEC-2025-0025SonicWall SonicOS: Mehrere Schwachstellen

Ein lokaler oder entfernter anonymer Angreifer kann diese Schwachstellen ausnutzen, um Root-Rechte zu erlangen, beliebigen Code auszuführen, vertrauliche Informationen preiszugeben, die Authentifizierung zu umgehen oder einen Denial-of-Service-Zustand zu erzeugen.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV25-007SonicWall security advisory (AV25-007) - Update 1

On January 7, 2025, SonicWall published security advisories to address vulnerabilities in multiple products. Included were updates for the following: On February 18, 2025, CISA added CVE-2024-53704 to their Known Exploited Vulnerabilities (KEV) Catalog.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20250115Security Bulletin 15 Jan 2025

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 15 Jan 2025, published on 15 January 2025. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0013Multiples vulnérabilités dans les produits SonicWall

De multiples vulnérabilités ont été découvertes dans les produits SonicWall. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et un déni de service à distance.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2024-019203SonicWALL の SonicOS における認証に関する脆弱性

SonicWALL の SonicOS には、認証に関する脆弱性が存在します。

Official advisory ↗
NCSC-NL · Dutch · NCSC-2025-0004Kwetsbaarheden verholpen in SonicWall SonicOS

De eerste kwetsbaarheid betreft een zwakke pseudo-willekeurige getallengenerator in de SSLVPN (CVE-2024-40762), waardoor aanvallers in sommige gevallen authenticatietokens kunnen voorspellen. CVE-2024-53704 betreft een onjuiste authenticatie in de SSLVPN, waardoor externe aanvallers de authenticatie kunnen omzeilen. CVE-2024-53705 betreft een server-side request forgery kwetsbaarheid in de SSH-beheerinterface, die TCP-verbindingen naar willekeurige IP-adressen toestaat. Tot slot betreft CVE-2024-53706 een lokale privilege-escalatie kwetsbaarheid in het Gen7 SonicOS Cloud-platform, waardoor laaggeprivilegieerde op afstand geauthenticeerde aanvallers roottoegang kunnen verkrijgen en mogelijkerwijze willekeurige code uit kunnen voeren. Onderzoekers hebben Proof-of-Concept-code (PoC) gepubliceerd waarmee de kwetsbaarheid met kenmerk CVE-2024-53704 kan worden aangetoond. Succesvol misbruik vereist dat er minstens één actieve VPN-sessie aanwezig is op het kwetsbare systeem. De kwaadwillende kan dan die sessie overnemen, maar heeft niet voldoende controle om de sessie open te houden wanneer de gebruiker de VPN-verbinding verbreekt, of de mogelijkheid zelf een nieuwe sessie op te bouwen. Succesvol misbruik en eventuele vervolgschade is dus afhankelijk van de tijd die de kwaadwillende krijgt in de actieve sessie en de rechten van het slachtoffer. De PoC is dermate eenvoudig van opzet, dat inmiddels meldingen zijn waargenomen van actief misbruik.

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.
Fix not verified
Affected
SonicOS: 7.1.1-7058 and older versions, 7.1.2-7019, 8.0.0-8035
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
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 9 Jan 2025 · Last source change 4 Aug 2026, 03:55 UTC · CWE-287 · Improper Authentication

CVE recordCVE.org · 5.2
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-2024-52037
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

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

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: cyber.gc.ca/sonicwall-security-advisory-av25-007.
    Before
    remediation: cyber.gc.ca/sonicwall-security-advisory-av25-007 · vendor advisory: psirt.global.sonicwall.com/SNWLID-2025-0003
    After
    vendor advisory: psirt.global.sonicwall.com/SNWLID-2025-0003
    PSIRT@sonicwall.com ↗
  2. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    PSIRT@sonicwall.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    7.1.1-7058 and older versions; 7.1.2-7019; 8.0.0-8035 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    SonicOS: 7.1.1-7058 and older versions, 7.1.2-7019, 8.0.0-8035 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    Canadian Centre for Cyber Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
ENISA EUVD · EUVD-2024-52037↗CISA KEV record↗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-2024-53704 · cve.blacktree.nl