How severe is CVE-2017-8810?

CVE-2017-8810 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-2017-8810 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8810?

CVE-2017-8810 primarily affects Debian Debian Linux. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8810?

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-2017-8810 published?

CVE-2017-8810 was published on 2017-11-15 and last updated on 2026-06-17.

CVE-2017-8810

CVE-2017-8810 is a high-severity vulnerability in Debian Debian Linux 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Debian Debian Linux
Published: 2017-11-15
Last modified: 2026-06-17

Description

MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests.

Frequently asked questions

What is CVE-2017-8810?: MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests.
How severe is CVE-2017-8810?: CVE-2017-8810 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-2017-8810 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8810?: CVE-2017-8810 primarily affects Debian Debian Linux. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8810?: 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-2017-8810 published?: CVE-2017-8810 was published on 2017-11-15 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.28.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.28.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.28.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.29.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.29.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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