CVE-2025-8454

It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer easier), skips OpenPGP verification if the upstream source is already downloaded from a previous run even if the verification failed back then.

Published: 2025-08-01 Last update: 2025-08-06 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-8454 is rated Moderate Risk (55.6/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.23%). Review affected assets and schedule 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-2025-8454

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 2026-05-28 0.05% 0.23% +0.18%
2 2026-04-17 0.02% 0.05% +0.03%
3 2025-08-01 — 0.02% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-8454

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 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-8454

OS Trackers for CVE-2025-8454

vendor priority summary link
debian not yet assigned CVE-2025-8454 not yet assigned priority: Debian including 1 source packages (devscripts), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2025-8454
suse critical CVE-2025-8454 severity critical: SUSE including 2 source package names (checkbashisms, devscripts), 34 product×package rows across 18 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (18 product lines)): Known Not Affected 34. https://www.suse.com/security/cve/CVE-2025-8454/
ubuntu medium CVE-2025-8454 medium priority: Ubuntu including 1 source packages (devscripts), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): deferred 8, ignored 1. https://ubuntu.com/security/CVE-2025-8454

Affected software / configurations for CVE-2025-8454

Vendor Product Version Raw CPE
debian devscripts 2.25.15 cpe:2.3:a:debian:devscripts:2.25.15:*:*:*:*:*:*:*

References for CVE-2025-8454

URL Tags
https://bugs.debian.org/1109251 Issue Tracking Mailing List
cvelogic Threat Intelligence