MEDIUM
CVE-2020-13132
CWE-763Published: July 9, 2020· Updated: Jun 17, 2026
4.6
CVSS v3.1
Official Description
An issue was discovered in Yubico libykpiv before 2.1.0. An attacker can trigger an incorrect free() in the ykpiv_util_generate_key() function in lib/util.c through incorrect error handling code. This could be used to cause a denial of service attack.
Technical Analysis
CVE-2020-13132 requires local access, meaning attackers must already have a foothold on the target system.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.6.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
yubico3 product(s)
libykpivpiv tool manageryubikey smart card minidriver
Source: NVD CPE · 3 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
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Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://blog.inhq.net/posts/yubico-libykpiv-vuln/Exploit · Third Party Advisory
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https://blog.inhq.net/posts/yubico-libykpiv-vuln/Exploit · Third Party Advisory
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Quick Facts
CVE IDCVE-2020-13132
CVSS Score4.6 / 10
SeverityMEDIUM
WeaknessCWE-763
CISA KEVNo
Affected1 vendor(s)
PublishedJul 9, 2020
Related CVEs (CWE-763)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-13132 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.