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CVE-2005-0039

20
FAUCET Score

CVE-2005-0039 describes a vulnerability in specific IPsec configurations, particularly when using ESP in tunnel mode, higher-layer integrity protection, or AH, affecting nissc ipsec products. Remote attackers can decrypt IPsec communications by manipulating outer packet fields, such as destination address, header length, or protocol field, to induce ICMP messages containing plaintext from the inner packet. This medium-severity vulnerability (CVSS 6.4) requires low attack complexity and no authentication, allowing for partial confidentiality and integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:nissc:ipsec:1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

AV:N/AC:L/Au:N/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.08%
Probability of exploitation in next 30 days
EPSS Percentile
89.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0408 is in the 86th percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
secunia.com / advisories/17938
securitytracker.com / id
kb.cert.org / vuls/id/302220
US Government Resource
niscc.gov.uk / niscc/docs/al-20050509-00386.html
securityfocus.com / archive/1/407774
securityfocus.com / bid/13562
vupen.com / english/advisories/2005/0507
vupen.com / english/advisories/2005/2806