CVE-2008-3803
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN...
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.
Exploit likelihood
What each source reports
NVD Score used
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.
- Record
CVE-2008-3803- CVSS 2.0
- 5.1 Medium
AV:N/AC:H/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.
- Record
CVE-2008-3803- Updated
- 2026-11-02
EUVDEUVD-2008-3789 No score
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.
- Record
EUVD-2008-3789- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2wcv-w38q-52h8 No score
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN...
A "logic error" in Cisco IOS 12.0 through 12.4, when a Multiprotocol Label Switching (MPLS) VPN with extended communities is configured, sometimes causes a corrupted route target (RT) to be used, which allows remote attackers to read traffic from other VPNs in opportunistic circumstances.
- Record
GHSA-2wcv-w38q-52h8- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2008-3803 is a medium vulnerability (CVSS 5.1) in Cisco Ios, published September 26, 2008. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.65%, the 85th percentile. No source names a fixed version.
References
secunia.com/advisories/31990
securityfocus.com/bid/31366
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5919
securitytracker.com/id?1020940
vupen.com/english/advisories/2008/2670
cisco.com/en/US/products/products_security_advisory09186a0080a014a9.shtml
nvd.nist.gov/vuln/detail/CVE-2008-3803
github.com/advisories/GHSA-2wcv-w38q-52h8