7.5

CVE-2025-65409: gnu recutils Divide By Zero

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2025-65409DEBIAN-CVE-2025-65409openSUSE-SU-2026:10000-1
Published 30-12-2025Last modified 02-01-2026
Open JSON

Vulnerability summary

CVE-2025-65409 is a high (CVSS 7.5) Divide By Zero vulnerability in gnu recutils. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 27.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.36%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 30-12-2025
    PublishedVulnerability first disclosed.
  2. 02-01-2026
    Last modifiedVulnerability information updated.

Description

A divide-by-zero in the encryption/decryption routines of GNU Recutils v1.9 allows attackers to cause a Denial of Service (DoS) via inputting an empty value as a password.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

+0.01 pp

From 0.35% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Vulnerability Disclosures

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • recutilsAll versions (No fix recorded)
Gnu1 product
Opensuse1 product
  • gnu-recutils&distro=openSUSE Tumbleweed< 1.9-3.1
Ubuntu1 product
  • recutilsAll versions (No fix recorded)

4 vendors · 4 products

References

8 links