How severe is CVE-2012-1577?

CVE-2012-1577 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-2012-1577 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-1577?

CVE-2012-1577 primarily affects Dietlibc Project Dietlibc. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-1577?

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-2012-1577 published?

CVE-2012-1577 was published on 2019-12-10 and last updated on 2026-06-16.

CVE-2012-1577

CVE-2012-1577 is a critical-severity vulnerability in Dietlibc Project Dietlibc 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-335.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-335
Affected product: Dietlibc Project Dietlibc
Published: 2019-12-10
Last modified: 2026-06-16

Description

lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.

Frequently asked questions

What is CVE-2012-1577?: lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
How severe is CVE-2012-1577?: CVE-2012-1577 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-2012-1577 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1577?: CVE-2012-1577 primarily affects Dietlibc Project Dietlibc. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-1577?: 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-2012-1577 published?: CVE-2012-1577 was published on 2019-12-10 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:dietlibc_project:dietlibc:-:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

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