CVE-2022-47629

Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.

Published: 2022-12-20 Last update: 2025-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-47629 is rated High Risk (67.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.46%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-47629

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-29 1.29% 1.46% +0.17%
2 2026-05-13 1.53% 1.29% -0.24%
3 2026-05-10 — 1.53% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-47629

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2022-47629

OS Trackers for CVE-2022-47629

vendor priority summary link
alpine — CVE-2022-47629: 1 source package rows (libksba); 12 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 5. https://security.alpinelinux.org/vuln/CVE-2022-47629
debian not yet assigned CVE-2022-47629 not yet assigned priority: Debian including 1 source packages (libksba), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-47629
gentoo high CVE-2022-47629: 1 GLSA(s) (202212-07), 1 atom(s) (dev-libs/libksba); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-47629
redhat high — https://access.redhat.com/security/cve/CVE-2022-47629
suse high CVE-2022-47629 severity important: SUSE including 290 source package names (0.23.0.3.2.368:libksba8-1.3.5-150000.4.6.1, 0.58.0.17.143:libksba8-1.3.5-150000.4.6.1, …), 565 product×package rows across 300 product lines (Container bci/bci-init, Container bci/nodejs, … (300 product lines)): Fixed 441, Known Affected 124. https://www.suse.com/security/cve/CVE-2022-47629/
ubuntu medium CVE-2022-47629 medium priority: Ubuntu including 1 source packages (libksba), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): released 8. https://ubuntu.com/security/CVE-2022-47629

Affected software / configurations for CVE-2022-47629

Vendor Product Version Raw CPE
gnupg libksba < 1.6.3 cpe:2.3:a:gnupg:libksba:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2022-47629

cvelogic Threat Intelligence