MEDIUM
CVE-2019-16128
CWE-120Published: October 22, 2020· Updated: Jun 17, 2026
6.8
CVSS v3.1
Official Description
Microchip CryptoAuthentication Library CryptoAuthLib prior to 20191122 has a Buffer Overflow (issue 1 of 2).
Technical Analysis
CVE-2019-16128 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
microchip1 product(s)
cryptoauthlib
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
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Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (6)
→
http://www.openwall.com/lists/oss-security/2020/10/22/1Mailing List · Third Party Advisory
→
https://census-labs.com/news/2020/10/21/microchip-cryptoauthlib-atcab_sign_base-buffer-overflow/Exploit · Press/Media Coverage · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/10/22/1Mailing List · Third Party Advisory
→
https://census-labs.com/news/2020/10/21/microchip-cryptoauthlib-atcab_sign_base-buffer-overflow/Exploit · Press/Media Coverage · Third Party Advisory
Quick Facts
CVE IDCVE-2019-16128
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedOct 22, 2020
Related CVEs (CWE-120)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-16128 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.COM. CVE data is provided under the NVD usage policy.