5

CVE-2005-2640: juniper netscreen_screenos

CVSS: 5.0v2.0MediumModified
Published 20-08-2005Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2005-2640 is a medium (CVSS 5.0) vulnerability in juniper netscreen_screenos. EPSS estimates a 7.09% chance of exploitation in the next 30 days, higher than 94.1% of scored vulnerabilities. 3 public exploits are recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
7.09%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits3reference, exploit-database

Timeline

  1. 20-08-2005
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

Behavioral discrepancy information leak in Juniper Netscreen VPN running ScreenOS 5.2.0 and earlier, when using IKE with pre-shared key authentication, allows remote attackers to enumerate valid usernames via an IKE Aggressive Mode packet, which generates a response if the username is valid but does not respond when the username is invalid.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

7.09%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

0.00 pp

From 7.09% on 18-09-2026

18-09-202618-10-2026
EPSS score
7.09%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

3 found
  • referenceUnverified

    Exploit Reference (securityfocus.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (nta-monitor.com)

    Maturity: unknown

  • exploit-databaseremotehardwareVerified

    Juniper NetScreen 5.0 - VPN 'Username' Enumeration

    Maturity: weaponized

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Juniper7 products
  • netscreen_screenos1.7 | 1.64 | 1.66 | 1.66_r2 | 1.73_r1 | 1.73_r2 | 2.0.1_r8 | 2.1 | 2.1_r6 | 2.1_r7 | 2.5 | 2.5r1 | 2.5r2 | 2.5r6 | 2.6.0 | 2.6.1 | 2.6.1r1 | 2.6.1r2 | 2.6.1r3 | 2.6.1r4 | 2.6.1r5 | 2.6.1r6 | 2.6.1r7 | 2.6.1r8 | 2.6.1r9 | 2.6.1r10 | 2.6.1r11 | 2.6.1r12 | 2.7.1 | 2.7.1r1 | 2.7.1r2 | 2.7.1r3 | 2.8 | 2.8_r1 | 2.10_r3 | 2.10_r4 | 3.0.0 | 3.0.0r1 | 3.0.0r2 | 3.0.0r3 | 3.0.0r4 | 3.0.1 | 3.0.1r1 | 3.0.1r2 | 3.0.1r3 | 3.0.1r4 | 3.0.1r5 | 3.0.1r6 | 3.0.1r7 | 3.0.2 | 3.0.3 | 3.0.3_r1.1 | 3.0.3r1 | 3.0.3r2 | 3.0.3r3 | 3.0.3r4 | 3.0.3r5 | 3.0.3r6 | 3.0.3r7 | 3.0.3r8 | 3.1.0 | 3.1.0r1 | 3.1.0r2 | 3.1.0r3 | 3.1.0r4 | 3.1.0r5 | 3.1.0r6 | 3.1.0r7 | 3.1.0r8 | 3.1.0r9 | 3.1.0r10 | 3.1.0r11 | 3.1.0r12 | 3.1.1_r2 | 4.0.0 | 4.0.0r1 | 4.0.0r2 | 4.0.0r3 | 4.0.0r4 | 4.0.0r5 | 4.0.0r6 | 4.0.0r7 | 4.0.0r8 | 4.0.0r9 | 4.0.0r10 | 4.0.0r11 | 4.0.0r12 | 4.0.1 | 4.0.1r1 | 4.0.1r2 | 4.0.1r3 | 4.0.1r4 | 4.0.1r5 | 4.0.1r6 | 4.0.1r7 | 4.0.1r8 | 4.0.1r9 | 4.0.1r10 | 4.0.2 | 4.0.3 | 4.0.3r1 | 4.0.3r2 | 4.0.3r3 | 4.0.3r4 | 5.0.0 | 5.1.0 | 5.1.0r3a | 5.2.0
  • netscreen-5gt5.0
  • netscreen-idp3.0 | 3.0r1 | 3.0r2
  • netscreen-idp_103.0.1_r1
  • netscreen-idp_1003.0.1_r1
Netscreen6 products
Neoteris1 product

3 vendors · 14 products

References

5 links