High 7.5Published Apr 19, 2012

CVE-2012-2110The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in OpenSSL before 0.9.8v, 1.0.0 before 1.0.0i, and 1.0.1 before 1.0.1a does not properly interpret integer data, which allows remote attackers…

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in OpenSSL before 0.9.8v, 1.0.0 before 1.0.0i, and 1.0.1 before 1.0.1a does not properly interpret integer data, which allows remote attackers to conduct buffer overflow attacks, and cause a denial of service (memory corruption) or possibly have unspecified other impact, via crafted DER data, as demonstrated by an X.509 certificate or an RSA public key.

CVSS: 7.5 HIGH (v2.0, NVD)AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0a; 1.0.0b; and 80 more ranges	NVD
redhat openssl redhat:openssl	0.9.6-15; 0.9.6b-3; 0.9.7a-2	NVD

References

References

http://archives.neohapsis.com/archives/fulldisclosure/2012-04/0209.html	exploit
http://cvs.openssl.org/chngview?cn=22431
http://cvs.openssl.org/chngview?cn=22434
http://cvs.openssl.org/chngview?cn=22439
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079149.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079299.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080176.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00014.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.