CVE-2019-12210

Exp

In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.

Published: 2019-06-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-12210 is rated High Exploit Risk (75.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.87%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.49% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-12210

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-12210

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.38% 1.87% +1.49%
2 2025-03-30 1.20% 0.38% -0.82%
3 2025-03-29 — 1.20% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-12210

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 5.2 [email protected]
5.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 4.9 [email protected]

Weakness enumeration for CVE-2019-12210

OS Trackers for CVE-2019-12210

vendor priority summary link
debian low CVE-2019-12210 low priority: Debian including 1 source packages (pam-u2f), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-12210
suse medium CVE-2019-12210 severity moderate: SUSE including 23 source package names (libu2f-host-devel-1.1.6-3.6.1, libu2f-host-devel-1.1.6-lp150.10.1, …), 54 product×package rows across 27 product lines (SUSE Linux Enterprise Desktop 12 SP4, SUSE Linux Enterprise High Performance Computing 12 SP5, … (27 product lines)): Fixed 54. https://www.suse.com/security/cve/CVE-2019-12210/
ubuntu medium CVE-2019-12210 medium priority: Ubuntu including 1 source packages (pam-u2f), 18 status rows across 18 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 14, ignored 2, DNE 1, released 1. https://ubuntu.com/security/CVE-2019-12210

Affected software / configurations for CVE-2019-12210

Vendor Product Version Raw CPE
yubico pam-u2f 1.0.7 cpe:2.3:a:yubico:pam-u2f:1.0.7:*:*:*:*:*:*:*

References for CVE-2019-12210

cvelogic Threat Intelligence