DaystoPatch

SonicWallExploited incident

SonicOS SSLVPN authentication bypass enabling session hijacking

CVE-2024-53704, CVE-2024-40762, CVE-2024-53705, CVE-2024-53706High, CVSS 8.2In CISA's Known Exploited Vulnerabilities catalog since 18 Feb 2025

  • Exploited after a fix existed
  • Known ransomware use
FixedFixed for every supported version on the day it became public.

Response

Silence
0h
First public report to first vendor statement
Exposure
0h
First public report to first fix
Follow-through
0h
First public report to a fix for every supported version
  • Vendor silent
  • Vendor statement, no fix
  • Fixed for some versions
  • Fixed when disclosed
  • Date only, no time of day

Timeline and evidence

Open a moment to see its source and archived quote.

  1. First public report

    SonicWall PSIRT SNWLID-2025-0003 (PSIRT API record)CuratedQuote verified

    "published_when":"2025-01-07T16:56:25Z"

    Coordinated disclosure with fixes (credited to Computest Security researchers via ZDI). SonicWall's revision 1.1 (2025-01-30) notes public PoCs; exploitation followed in February 2025 (Bishop Fox released details 2025-02-10 and Arctic Wolf reported attacks shortly after, per contemporaneous reporting not fetched here).

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    5 more sources for this moment
    Bluesky postClaimedQuote not checked yet7 Jan 2025, 12:44 UTC

    SonicOS SSLVPN Authentication Bypass Vulnerability. CVE-2024-53704 sounds not very good but the others seem quite critical too.

    Earliest third-party post we hold.

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    Bluesky post social
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    SonicWall advisory SNWLID-2025-0003ClaimedQuote verified7 Jan 2025, 16:56 UTC

    1) CVE-2024-40762 - SonicOS SSLVPN Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG).

    The vendor's own disclosure.

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    CVE.org record CVE-2024-53704ClaimedQuote verified9 Jan 2025, 06:52 UTC

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

    CVE record published.

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    Mastodon postClaimedQuote not checked yet12 Feb 2025, 09:01 UTC

    ⚠️ Si vous administrez ou utilisez des firewalls SonicWall, patchez dès que possible Un exploit (CVE-2024-53704) permettant le détournement de sessions SSL VPN sans authentification est désormais public. Des attaquants peuvent ainsi prendre le contrôle de sessions actives

    Earliest third-party post we hold.

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    CISA KEV (CVE-2024-53704)ClaimedQuote verified18 Feb 2025

    SonicWall SonicOS SSLVPN Improper Authentication Vulnerability

    Added to CISA's KEV catalog on 2025-02-18.

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  2. Vendor statement

    at disclosure

    SonicWall advisory SNWLID-2025-0003ClaimedQuote verified

    1) CVE-2024-40762 - SonicOS SSLVPN Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG).

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    1 more source for this moment
    SonicWall PSIRT SNWLID-2025-0003 (PSIRT API record)CuratedQuote verified7 Jan 2025, 16:56 UTC

    "published_when":"2025-01-07T16:56:25Z"

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    Curated. Found by a researcher, with a verbatim quote and link.
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  3. First workaround

    at disclosure

    SonicWall PSIRT SNWLID-2025-0003 (PSIRT API record)CuratedQuote verified

    please ensure that access is limited to trusted sources, or disable SSLVPN access from the Internet.

    Workaround field; revisions (1.1-1.3) changed the summary, comments and affected versions, not the workaround, so it is assumed present at v1.0.

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  4. First fix

    at disclosure

    SonicWall PSIRT SNWLID-2025-0003 (PSIRT API record)CuratedQuote verified

    7.1.3-7015 and higher

    Fixed SonicOS builds listed at initial release (no revision changed the fixed versions). Upper bound: fixed builds may have shipped earlier; only the date shown here is evidenced (R2).

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  5. Fixed for all versions

    at disclosure

    SonicWall PSIRT SNWLID-2025-0003 (PSIRT API record)CuratedQuote verified

    8.0.0-8037 and higher

    Gen6 (6.5.5.1-6n), Gen7 (7.0.1-5165, 7.1.3-7015) and TZ80 (8.0.0-8037) fixes all listed at initial release.

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Send this to your boss

No brief for this incident yet. We write one for every open incident and every critical bug exploited before a fix.

Affected products

  • SonicOS (Gen6, Gen7, TZ80 firewalls, NSv)
How we built this timeline

One advisory fixing four SonicOS CVEs; only CVE-2024-53704 is in KEV (18 Feb 2025, ransomware use Known). Revision history: v1.0 07-Jan-2025 initial; v1.1 30-Jan-2025 public PoCs noted; v1.2 10-Feb-2025 IoCs added; v1.3 24-Apr-2025 affected version clarified.

Exploitation followed public PoCs, after fixes, so exploited before a fix is false. SonicWall CVSS 8.2 for CVE-2024-53704.

Related

SonicWall report card