How severe is CVE-2015-0286?

CVE-2015-0286 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-0286 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0286?

CVE-2015-0286 primarily affects Openssl. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0286?

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

When was CVE-2015-0286 published?

CVE-2015-0286 was published on 2015-03-19 and last updated on 2026-06-17.

CVE-2015-0286

CVE-2015-0286 is a medium-severity vulnerability in Openssl with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-17.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-17
Affected product: Openssl
Published: 2015-03-19
Last modified: 2026-06-17

Description

The ASN1_TYPE_cmp function in crypto/asn1/a_type.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not properly perform boolean-type comparisons, which allows remote attackers to cause a denial of service (invalid read operation and application crash) via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature.

Frequently asked questions

What is CVE-2015-0286?: The ASN1_TYPE_cmp function in crypto/asn1/a_type.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not properly perform boolean-type comparisons, which allows remote attackers to cause a denial of service (invalid read operation and application crash) via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature.
How severe is CVE-2015-0286?: CVE-2015-0286 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-0286 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0286?: CVE-2015-0286 primarily affects Openssl. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0286?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-0286 published?: CVE-2015-0286 was published on 2015-03-19 and last updated on 2026-06-17.

References

Affected products (33)

cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0m:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0n:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0o:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0p:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.0q:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1a:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1b:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1c:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1d:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1e:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1f:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1g:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1h:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1i:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1j:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1k:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.1l:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:*

More vulnerabilities in Openssl

CVE-2009-3245 — Critical (CVSS 10.0): OpenSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c,…
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All CVEs affecting Openssl →

Other CWE-17 vulnerabilities

CVE-2015-5887 — Critical (CVSS 10.0): The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request…
CVE-2015-2738 — Critical (CVSS 10.0): The YCbCrImageDataDeserializer::ToDataSourceSurface function in the YCbCr implementation in Mozilla Firefox before…
CVE-2015-2737 — Critical (CVSS 10.0): The rx::d3d11::SetBufferData function in the Direct3D 11 implementation in Mozilla Firefox before 39.0, Firefox ESR…
CVE-2015-2734 — Critical (CVSS 10.0): The CairoTextureClientD3D9::BorrowDrawTarget function in the Direct3D 9 implementation in Mozilla Firefox before 39.0,…
CVE-2015-4335 — Critical (CVSS 10.0): Redis before 2.8.21 and 3.x before 3.0.2 allows remote attackers to execute arbitrary Lua bytecode via the eval command.
CVE-2015-3292 — Critical (CVSS 10.0): The installer in NetApp OnCommand Workflow Automation before 2.2.1P1 and 3.x before 3.0P1 sets up the Java Debugging…

Browse all CWE-17 vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

218.4.91.163 (ipv4-addr)
200.77.172.159 (ipv4-addr)
200.196.50.91 (ipv4-addr)
166.62.41.190 (ipv4-addr)
50.62.22.47 (ipv4-addr)
222.99.52.202 (ipv4-addr)
191.101.33.225 (ipv4-addr)
121.164.135.251 (ipv4-addr)