How severe is CVE-2012-4449?

CVE-2012-4449 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2012-4449 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4449?

CVE-2012-4449 primarily affects Apache Hadoop. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-4449?

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

When was CVE-2012-4449 published?

CVE-2012-4449 was published on 2017-10-30 and last updated on 2026-06-16.

CVE-2012-4449

CVE-2012-4449 is a critical-severity vulnerability in Apache Hadoop with a CVSS 3.x base score of 9.8. 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-327.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Apache Hadoop
Published: 2017-10-30
Last modified: 2026-06-16

Description

Apache Hadoop before 0.23.4, 1.x before 1.0.4, and 2.x before 2.0.2 generate token passwords using a 20-bit secret when Kerberos security features are enabled, which makes it easier for context-dependent attackers to crack secret keys via a brute-force attack.

Frequently asked questions

What is CVE-2012-4449?: Apache Hadoop before 0.23.4, 1.x before 1.0.4, and 2.x before 2.0.2 generate token passwords using a 20-bit secret when Kerberos security features are enabled, which makes it easier for context-dependent attackers to crack secret keys via a brute-force attack.
How severe is CVE-2012-4449?: CVE-2012-4449 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2012-4449 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4449?: CVE-2012-4449 primarily affects Apache Hadoop. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4449?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2012-4449 published?: CVE-2012-4449 was published on 2017-10-30 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:2.0.0:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:2.0.1:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:hadoop:2.0.2:alpha:*:*:*:*:*:*

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