How severe is CVE-2023-33850?

CVE-2023-33850 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-2023-33850 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-33850?

CVE-2023-33850 primarily affects Ibm Txseries For Multiplatform. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-33850?

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-2023-33850 published?

CVE-2023-33850 was published on 2023-08-22 and last updated on 2026-06-17.

CVE-2023-33850

CVE-2023-33850 is a high-severity vulnerability in Ibm Txseries For Multiplatform 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-203.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Ibm Txseries For Multiplatform
Published: 2023-08-22
Last modified: 2026-06-17

Description

IBM GSKit-Crypto could allow a remote attacker to obtain sensitive information, caused by a timing-based side channel in the RSA Decryption implementation. By sending an overly large number of trial messages for decryption, an attacker could exploit this vulnerability to obtain sensitive information.

Frequently asked questions

What is CVE-2023-33850?: IBM GSKit-Crypto could allow a remote attacker to obtain sensitive information, caused by a timing-based side channel in the RSA Decryption implementation. By sending an overly large number of trial messages for decryption, an attacker could exploit this vulnerability to obtain sensitive information.
How severe is CVE-2023-33850?: CVE-2023-33850 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-2023-33850 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-33850?: CVE-2023-33850 primarily affects Ibm Txseries For Multiplatform. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-33850?: 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-2023-33850 published?: CVE-2023-33850 was published on 2023-08-22 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:ibm:txseries_for_multiplatform:8.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:txseries_for_multiplatform:9.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:txseries_for_multiplatform:8.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cics_tx:11.1:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:cics_tx:10.1:*:*:*:advanced:*:*:*
cpe:2.3:a:ibm:cics_tx:11.1:*:*:*:advanced:*:*:*

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