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Vulnerability details: VCID-mw2w-gzpr-cbcq
Vulnerability ID VCID-mw2w-gzpr-cbcq
Aliases CVE-2025-30258
Summary In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."
Status Published
Exploitability 0.5
Weighted Severity 2.4
Risk 1.2
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-754 Improper Check for Unusual or Exceptional Conditions
System Score Found at
cvssv3 2.7 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-30258.json
epss 0.00012 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
epss 0.00019 https://api.first.org/data/v1/epss?cve=CVE-2025-30258
cvssv3.1 2.7 https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
ssvc Track https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
cvssv3.1 2.7 https://dev.gnupg.org/T7527
ssvc Track https://dev.gnupg.org/T7527
cvssv3.1 2.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 2.7 https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
ssvc Track https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-30258.json
https://api.first.org/data/v1/epss?cve=CVE-2025-30258
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-30258
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
000491.html https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
1100990 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1100990
2353427 https://bugzilla.redhat.com/show_bug.cgi?id=2353427
CVE-2025-30258 https://nvd.nist.gov/vuln/detail/CVE-2025-30258
rG48978ccb4e20866472ef18436a32744350a65158 https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
T7527 https://dev.gnupg.org/T7527
USN-7412-1 https://usn.ubuntu.com/7412-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-30258.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L Found at https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-03-19T20:49:18Z/ Found at https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L Found at https://dev.gnupg.org/T7527
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-03-19T20:49:18Z/ Found at https://dev.gnupg.org/T7527
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:L Found at https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-03-19T20:49:18Z/ Found at https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html
Exploit Prediction Scoring System (EPSS)
Percentile 0.01066
EPSS Score 0.00012
Published At Aug. 15, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:51:44.600583+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/7412-1/ 37.0.0