CVE-2025-8454: Debian devscripts · Vulnerability
Affects Debian devscriptsSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 1 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Debian devscripts | Affected
| Fixed in– |
AI-suggested
To mitigate this vulnerability, organizations should: 1) Immediately update devscripts to a patched version once available from Debian security advisories. 2) Until a patch is released, avoid relying solely on uscan for automated upstream source verification; instead, manually verify OpenPGP signatures for all downloaded files, especially if any verification failures occur. 3) Implement additional integrity checks such as verifying checksums (SHA256) from trusted sources before accepting upstream files. 4) Employ network security controls to prevent man-in-the-middle attacks that could substitute upstream sources, including using HTTPS and DNSSEC where possible. 5) Monitor package build and deployment pipelines for anomalies that could indicate tampering. 6) Educate package maintainers and developers about the vulnerability and the importance of signature verification. 7) Consider integrating reproducible builds and other supply chain security best practices to detect unauthorized changes.
Description
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.