How severe is CVE-2015-3200?

CVE-2015-3200 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 none, integrity high, and availability none.

Is CVE-2015-3200 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3200?

CVE-2015-3200 primarily affects Lighttpd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3200?

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-2015-3200 published?

CVE-2015-3200 was published on 2015-06-09 and last updated on 2026-06-17.

CVE-2015-3200

CVE-2015-3200 is a high-severity vulnerability in Lighttpd 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-74.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Lighttpd
Published: 2015-06-09
Last modified: 2026-06-17

Description

mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP authentication string without a colon character, as demonstrated by a string containing a NULL and new line character.

Frequently asked questions

What is CVE-2015-3200?: mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP authentication string without a colon character, as demonstrated by a string containing a NULL and new line character.
How severe is CVE-2015-3200?: CVE-2015-3200 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 none, integrity high, and availability none.
Is CVE-2015-3200 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3200?: CVE-2015-3200 primarily affects Lighttpd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3200?: 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-2015-3200 published?: CVE-2015-3200 was published on 2015-06-09 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*
cpe:2.3:a:hp:virtual_customer_access_system:*:*:*:*:*:*:*:*
cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

64.53.7.231 (ipv4-addr)
111.70.9.143 (ipv4-addr)
102.53.15.18 (ipv4-addr)
102.53.15.17 (ipv4-addr)
111.70.32.11 (ipv4-addr)
14.102.50.25 (ipv4-addr)
58.221.244.34 (ipv4-addr)
50.223.176.171 (ipv4-addr)