How severe is CVE-2007-4961?

CVE-2007-4961 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2007-4961 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4961?

CVE-2007-4961 affects Lindenlab Second Life. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-4961?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-4961 published?

CVE-2007-4961 was published on 2007-09-18 and last updated on 2026-06-16.

CVE-2007-4961

CVE-2007-4961 is a high-severity vulnerability in Lindenlab Second Life with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-311.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Lindenlab Second Life
Published: 2007-09-18
Last modified: 2026-06-16

Description

The login_to_simulator method in Linden Lab Second Life, as used by the secondlife:// protocol handler and possibly other Second Life login mechanisms, sends an MD5 hash in cleartext in the passwd field, which allows remote attackers to login to an account by sniffing the network and then sending this hash to a Second Life authentication server.

Frequently asked questions

What is CVE-2007-4961?: The login_to_simulator method in Linden Lab Second Life, as used by the secondlife:// protocol handler and possibly other Second Life login mechanisms, sends an MD5 hash in cleartext in the passwd field, which allows remote attackers to login to an account by sniffing the network and then sending this hash to a Second Life authentication server.
How severe is CVE-2007-4961?: CVE-2007-4961 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2007-4961 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4961?: CVE-2007-4961 affects Lindenlab Second Life. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-4961?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-4961 published?: CVE-2007-4961 was published on 2007-09-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:lindenlab:second_life:-:*:*:*:*:*:*:*

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