DaystoPatch

CiscoExploited incident

Cisco Smart Licensing Utility static administrative credential (cisco-sa-cslu-7gHMzWmw)

CVE-2024-20439Critical, CVSS 9.8In CISA's Known Exploited Vulnerabilities catalog since 31 Mar 2025

  • Exploited after a fix existed
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

    Cisco PSIRT advisory cisco-sa-cslu-7gHMzWmwCuratedQuote verified

    Multiple vulnerabilities in Cisco Smart Licensing Utility could allow an unauthenticated, remote attacker to collect sensitive information or administer Cisco Smart Licensing Utility services on a system while the software is running.

    Coordinated disclosure: advisory first published 2024 September 4 16:00 GMT with fixes. Exploitation was first acknowledged in revision 1.1 (CSAF 2025-04-01T19:24:23+00:00): 'In March 2025, the Cisco Product Security Incident Response Team (PSIRT) became aware of attempted exploitation of CVE-2024-20439.'

    Recorded time
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    To the minute
    Origin
    Curated. Found by a researcher, with a verbatim quote and link.
    Quote check
    Found in the archived copy
    Snapshot
    sha256:6b73395ec47c7b19…
    Used in metrics
    Yes
    Dispute this timestamp
    3 more sources for this moment
    CVE.org record CVE-2024-20439ClaimedQuote verified4 Sep 2024, 16:28 UTC

    A vulnerability in Cisco Smart Licensing Utility (CSLU) could allow an unauthenticated, remote attacker to log into an affected system by using a static administrative credential.

    CVE record published.

    Recorded time
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    Origin
    Claimed. The date the source gives.
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    Found in the archived copy
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    sha256:c0b381e8ea1e8b3e…
    Used in metrics
    No, kept for the record
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    Bluesky postClaimedQuote not checked yet4 Sep 2024, 17:15 UTC

    ID: CVE-2024-20439

    Earliest third-party post we hold.

    Source
    Bluesky post social
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    Claimed. The date the source gives.
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    Not checked yet
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    CISA KEV (CVE-2024-20439)ClaimedQuote verified31 Mar 2025

    Cisco Smart Licensing Utility Static Credential Vulnerability

    Added to CISA's KEV catalog on 2025-03-31.

    Recorded time
    Precision
    Date only (no time of day is shown)
    Origin
    Claimed. The date the source gives.
    Quote check
    Found in the archived copy
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    sha256:ef8fffede5c47200…
    Used in metrics
    No, kept for the record
    Dispute this timestamp

  2. Vendor statement

    at disclosure

    Cisco PSIRT advisory cisco-sa-cslu-7gHMzWmwCuratedQuote verified

    First Published: 2024 September 4 16:00 GMT

    Recorded time
    Precision
    To the minute
    Origin
    Curated. Found by a researcher, with a verbatim quote and link.
    Quote check
    Found in the archived copy
    Snapshot
    sha256:6b73395ec47c7b19…
    Used in metrics
    Yes
    Dispute this timestamp

  3. First workaround

    No official mitigation found yet.

  4. First fix

    at disclosure

    Cisco PSIRT advisory cisco-sa-cslu-7gHMzWmwCuratedQuote verified

    Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

    Fix: migrate to release 2.3.0 (listed as not vulnerable); 2.0.0, 2.1.0 and 2.2.0 are affected. The only revisions (1.1 on 2025-04-01, 1.2 on 2025-04-04) changed the exploitation section.

    Recorded time
    Precision
    To the minute
    Origin
    Curated. Found by a researcher, with a verbatim quote and link.
    Quote check
    Found in the archived copy
    Snapshot
    sha256:6b73395ec47c7b19…
    Used in metrics
    Yes
    Dispute this timestamp

  5. Fixed for all versions

    at disclosure

    Cisco PSIRT advisory cisco-sa-cslu-7gHMzWmwCuratedQuote verified

    First Published: 2024 September 4 16:00 GMT

    Single product line; every affected release is told to migrate to 2.3.0, available at publication.

    Recorded time
    Precision
    To the minute
    Origin
    Curated. Found by a researcher, with a verbatim quote and link.
    Quote check
    Found in the archived copy
    Snapshot
    sha256:6b73395ec47c7b19…
    Used in metrics
    Yes
    Dispute this timestamp

This advisory changed after publication

  1. cisco-sa-cslu-7gHMzWmw

    Recorded in the revision history

    Cisco Smart Licensing Utility Vulnerabilities

    Advisory now says the bug is exploited (earlier version: vendor not aware).

    • Exploitation status
    Exploitation status
    Beforevendor not aware of exploitation
    Aftervendor aware of exploitation
    Earlier version captured 15 Mar 2025, 18:08 UTC: archived copyLater version captured 6 Apr 2025, 18:32 UTC: archived copyRecovered from archived copiesSnapshots 1d2d0c93e7… and cfb7439a21…Incident page

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

  • Cisco Smart Licensing Utility 2.0.0, 2.1.0, 2.2.0
How we built this timeline

Old bug added to KEV months after the fix (KEV 31 Mar 2025). The same advisory fixes CVE-2024-20440 (not in KEV).

Found by Cisco internal testing (Eric Vance).

Related

No related incidents.

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