How severe is CVE-2018-14780?

CVE-2018-14780 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-14780 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-14780?

CVE-2018-14780 primarily affects Yubico Piv Manager. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-14780?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-14780 published?

CVE-2018-14780 was published on 2018-08-15 and last updated on 2026-06-17.

CVE-2018-14780

CVE-2018-14780 is a medium-severity vulnerability in Yubico Piv Manager with a CVSS 3.x base score of 4.6. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 2.1
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Yubico Piv Manager
Published: 2018-08-15
Last modified: 2026-06-17

Description

An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `_ykpiv_fetch_object()`: {% highlight c %} if(sw == SW_SUCCESS) { size_t outlen; int offs = _ykpiv_get_length(data + 1, &outlen); if(offs == 0) { return YKPIV_SIZE_ERROR; } memmove(data, data + 1 + offs, outlen); *len = outlen; return YKPIV_OK; } else { return YKPIV_GENERIC_ERROR; } {% endhighlight %} -- in the end, a `memmove()` occurs with a length retrieved from APDU data. This length is not checked for whether it is outside of the APDU data retrieved. Therefore the `memmove()` could copy bytes behind the allocated data buffer into this buffer.

Frequently asked questions

What is CVE-2018-14780?: An out-of-bounds read issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `_ykpiv_fetch_object()`: {% highlight c %} if(sw == SW_SUCCESS) { size_t outlen; int offs = _ykpiv_get_length(data + 1, &outlen); if(offs == 0) { return YKPIV_SIZE_ERROR; } memmove(data, data + 1 + offs, outlen); *len = outlen; return YKPIV_OK; } else { return YKPIV_GENERIC_ERROR; } {% endhighlight %} -- in the end, a `memmove()` occurs with a length retrieved from APDU data. This length is not checked for whether it is outside of the APDU data retrieved. Therefore the `memmove()` could copy bytes behind the allocated data buffer into this buffer.
How severe is CVE-2018-14780?: CVE-2018-14780 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-14780 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-14780?: CVE-2018-14780 primarily affects Yubico Piv Manager. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-14780?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-14780 published?: CVE-2018-14780 was published on 2018-08-15 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:yubico:piv_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2b:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2c:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2d:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2e:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2f:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_manager:1.4.2g:*:*:*:*:*:*:*
cpe:2.3:a:yubico:piv_tool:*:*:*:*:*:*:*:*
cpe:2.3:a:yubico:smart_card_minidriver:*:*:*:*:*:*:*:*

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