7.5

CVE-2009-3602: nlnetlabs unbound Cryptographic Issues

CVSS: 7.5v2.0HighModified
AliasesDEBIAN-CVE-2009-3602DSA-1963-1
Published 13-10-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-3602 is a high (CVSS 7.5) Cryptographic Issues vulnerability in nlnetlabs unbound. EPSS estimates a 2.98% chance of exploitation in the next 30 days, higher than 87% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
2.98%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-10-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.98%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

0.00 pp

From 2.98% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.98%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • unbound< 1.3.4-1 | < 1.0.2-1+lenny1
Nlnetlabs1 product
  • unbound≤ 1.3.3 | 0.0 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.7.1 | 0.7.2 | 0.8 | 0.09 | 0.10 | 0.11 | 1.0.0 | 1.0.1 | 1.0.2 | 1.1.0 | 1.1.1 | 1.2.0 | 1.2.1 | 1.3.0 | 1.3.1 | 1.3.2

2 vendors · 2 products

References

10 links