How severe is CVE-2009-1603?

CVE-2009-1603 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2009-1603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1603?

CVE-2009-1603 primarily affects Opensc-project Opensc. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1603?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2009-1603 published?

CVE-2009-1603 was published on 2009-05-11 and last updated on 2026-06-16.

CVE-2009-1603

CVE-2009-1603 is a high-severity vulnerability in Opensc-project Opensc with a CVSS 3.x base score of 7.5. 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-312.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Opensc-project Opensc
Published: 2009-05-11
Last modified: 2026-06-16

Description

src/tools/pkcs11-tool.c in pkcs11-tool in OpenSC 0.11.7, when used with unspecified third-party PKCS#11 modules, generates RSA keys with incorrect public exponents, which allows attackers to read the cleartext form of messages that were intended to be encrypted.

Frequently asked questions

What is CVE-2009-1603?: src/tools/pkcs11-tool.c in pkcs11-tool in OpenSC 0.11.7, when used with unspecified third-party PKCS#11 modules, generates RSA keys with incorrect public exponents, which allows attackers to read the cleartext form of messages that were intended to be encrypted.
How severe is CVE-2009-1603?: CVE-2009-1603 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2009-1603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1603?: CVE-2009-1603 primarily affects Opensc-project Opensc. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-1603 published?: CVE-2009-1603 was published on 2009-05-11 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:opensc-project:opensc:0.11.7:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*

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