CVE-2012-1577
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
- Record
CVE-2012-1577- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-335
- Updated
- 2026-11-02
CVE List No score
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
- Record
CVE-2012-1577- Updated
- 2026-11-02
EUVDEUVD-2012-1594 No score
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
- Record
EUVD-2012-1594- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7542-v6gh-mfvw
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
- Record
GHSA-7542-v6gh-mfvw- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-335
- Updated
- 2026-11-02
OSV
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
- Record
CVE-2012-1577- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-1577
lib/libc/stdlib/random.c in OpenBSD returns 0 when seeded with 0.
- Record
DEBIAN-CVE-2012-1577- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-1577 is a critical vulnerability (CVSS 9.8) in Openbsd, published December 10, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.55%, the 75th percentile. Fixed in dietlibc 0.33~cvs20120325-1.