How severe is CVE-2022-3515?

CVE-2022-3515 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-3515 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3515?

CVE-2022-3515 primarily affects Gnupg Libksba. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-3515?

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

When was CVE-2022-3515 published?

CVE-2022-3515 was published on 2023-01-12 and last updated on 2026-06-17.

CVE-2022-3515

CVE-2022-3515 is a critical-severity vulnerability in Gnupg Libksba with a CVSS 3.x base score of 9.8. 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-190.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Gnupg Libksba
Published: 2023-01-12
Last modified: 2026-06-17

Description

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.

Frequently asked questions

What is CVE-2022-3515?: A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.
How severe is CVE-2022-3515?: CVE-2022-3515 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-3515 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3515?: CVE-2022-3515 primarily affects Gnupg Libksba. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-3515?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-3515 published?: CVE-2022-3515 was published on 2023-01-12 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:gnupg:libksba:*:*:*:*:*:*:*:*
cpe:2.3:a:gpg4win:gpg4win:*:*:*:*:*:*:*:*
cpe:2.3:a:gnupg:vs-desktop:*:*:*:*:*:*:*:*
cpe:2.3:a:gnupg:gnupg:*:*:*:*:lts:*:*:*
cpe:2.3:a:gnupg:gnupg:*:*:*:*:-:*:*:*

More vulnerabilities in Gnupg Libksba

CVE-2022-47629 — Critical (CVSS 9.8): Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.
CVE-2016-4579 — High (CVSS 7.5): Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via…
CVE-2016-4574 — High (CVSS 7.5): Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote…
CVE-2016-4356 — High (CVSS 7.5): The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a…
CVE-2016-4355 — High (CVSS 7.5): Multiple integer overflows in ber-decoder.c in Libksba before 1.3.3 allow remote attackers to cause a denial of service…
CVE-2016-4354 — High (CVSS 7.5): ber-decoder.c in Libksba before 1.3.3 uses an incorrect integer data type, which allows remote attackers to cause a…

All CVEs affecting Gnupg Libksba →

Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

CVE-2026-4689 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was…
CVE-2026-24814 — Critical (CVSS 10.0): Integer Overflow or Wraparound vulnerability in swoole swoole-src (thirdparty/hiredis modules). This vulnerability is…
CVE-2025-64721 — Critical (CVSS 10.0): Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions…
CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

Browse all CWE-190 (Integer Overflow or Wraparound) vulnerabilities →