MEDIUM
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via a malformed packet that is not properly handled during switching from one tunnel to a second tunnel, aka Bug IDs CSCsh97579 and CSCsq31776
Published Sep 28, 2009
6.8
MEDIUMCVSS 2.0
EPSS 2.31%
Description
Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via a malformed packet that is not properly handled during switching from one tunnel to a second tunnel, aka Bug IDs CSCsh97579 and CSCsq31776.
Affected products
No data.
OR
- 12.0
- 12.0da
- 12.0db
- 12.0dc
- 12.0s
- 12.0sc
- 12.0sl
- 12.0sp
- 12.0st
- 12.0sx
- 12.0sy
- 12.0sz
- 12.0t
- 12.0w
- 12.0wc
- 12.0xa
- 12.0xb
- 12.0xc
- 12.0xd
- 12.0xe
- 12.0xg
- 12.0xh
- 12.0xi
- 12.0xj
- 12.0xk
- 12.0xl
- 12.0xm
- 12.0xn
- 12.0xq
- 12.0xr
- 12.0xt
- 12.0xv
- 12.1
- 12.1aa
- 12.1ax
- 12.1ay
- 12.1cx
- 12.1da
- 12.1db
- 12.1dc
- 12.1e
- 12.1ea
- 12.1eb
- 12.1ec
- 12.1eo
- 12.1eu
- 12.1ew
- 12.1ex
- 12.1ey
- 12.1ez
- 12.1ga
- 12.1gb
- 12.1t
- 12.1xa
- 12.1xb
- 12.1xc
- 12.1xd
- 12.1xe
- 12.1xf
- 12.1xg
- 12.1xh
- 12.1xi
- 12.1xj
- 12.1xl
- 12.1xm
- 12.1xp
- 12.1xq
- 12.1xr
- 12.1xs
- 12.1xt
- 12.1xu
- 12.1xv
- 12.1xw
- 12.1xx
- 12.1xy
- 12.1xz
- 12.1ya
- 12.1yb
- 12.1yc
- 12.1yd
- 12.1ye
- 12.1yf
- 12.1yh
- 12.1yi
- 12.2
- 12.2b
- 12.2bc
- 12.2bw
- 12.2bx
- 12.2by
- 12.2bz
- 12.2cx
- 12.2cy
- 12.2cz
- 12.2da
- 12.2dd
- 12.2dx
- 12.2ew
- 12.2ewa
- 12.2ex
- 12.2ez
- 12.2fz
- 12.2ira
- 12.2irb
- 12.2irc
- 12.2ixa
- 12.2ixb
- 12.2ixc
- 12.2ixd
- 12.2ixe
- 12.2ixf
- 12.2ixg
- 12.2ixh
- 12.2ja
- 12.2jk
- 12.2mb
- 12.2mc
- 12.2s
- 12.2sb
- 12.2sbc
- 12.2sca
- 12.2scb
- 12.2se
- 12.2sea
- 12.2seb
- 12.2sec
- 12.2sed
- 12.2see
- 12.2sef
- 12.2seg
- 12.2sg
- 12.2sga
- 12.2sm
- 12.2so
- 12.2sq
- 12.2sra
- 12.2srb
- 12.2src
- 12.2srd
- 12.2ste
- 12.2su
- 12.2sv
- 12.2sva
- 12.2svd
- 12.2sve
- 12.2sx
- 12.2sxa
- 12.2sxb
- 12.2sxd
- 12.2sxe
- 12.2sxf
- 12.2sxh
- 12.2sxi
- 12.2sy
- 12.2sz
- 12.2t
- 12.2tpc
- 12.2xa
- 12.2xb
- 12.2xc
- 12.2xd
- 12.2xf
- 12.2xg
- 12.2xh
- 12.2xi
- 12.2xj
- 12.2xk
- 12.2xl
- 12.2xm
- 12.2xo
- 12.2xq
- 12.2xr
- 12.2xs
- 12.2xt
- 12.2xu
- 12.2xv
- 12.2ya
- 12.2yb
- 12.2yc
- 12.2yd
- 12.2ye
- 12.2yg
- 12.2yj
- 12.2yk
- 12.2yl
- 12.2ym
- 12.2yn
- 12.2yo
- 12.2yq
- 12.2yr
- 12.2yt
- 12.2yu
- 12.2yv
- 12.2yw
- 12.2yx
- 12.2yy
- 12.2za
- 12.2zb
- 12.2zc
- 12.2zd
- 12.2zf
- 12.2zg
- 12.2zh
- 12.2zj
- 12.2zl
- 12.2zp
- 12.2zu
- 12.2zx
- 12.2zya
- 12.3
- 12.3b
- 12.3bc
- 12.3bw
- 12.3ja
- 12.3jea
- 12.3jeb
- 12.3jec
- 12.3jk
- 12.3jl
- 12.3t
- 12.3tpc
- 12.3va
- 12.3xa
- 12.3xb
- 12.3xc
- 12.3xd
- 12.3xf
- 12.3xg
- 12.3xi
- 12.3xj
- 12.3xk
- 12.3xl
- 12.3xq
- 12.3xr
- 12.3xu
- 12.3xx
- 12.3xy
- 12.3xz
- 12.3yd
- 12.3yf
- 12.3yg
- 12.3yi
- 12.3yj
- 12.3yk
- 12.3ym
- 12.3yq
- 12.3ys
- 12.3yt
- 12.3yu
- 12.3yx
- 12.3yz
- 12.4
- 12.4ja
- 12.4jda
- 12.4jdc
- 12.4jdd
- 12.4jk
- 12.4jl
- 12.4jma
- 12.4jx
- 12.4md
- 12.4mda
- 12.4sw
- 12.4t
- 12.4xa
- 12.4xb
- 12.4xc
- 12.4xd
- 12.4xe
- 12.4xf
- 12.4xg
- 12.4xj
- 12.4xk
- 12.4xl
- 12.4xm
- 12.4xn
- 12.4xp
- 12.4xq
- 12.4xr
- 12.4xt
- 12.4xv
- 12.4xw
- 12.4xy
- 12.4xz
- 12.4ya
- 12.4yb
- 12.4yd
- 12.4ye
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
AV:N/AC:L/Au:S/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.31% 0.02309
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02309
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.31% (0.02309) | 82.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.31% (0.02309) | 81.06th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.12% (0.01117) | 76.70th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.62% (0.00618) | 79.51th | v3 (v2023.03.01) |
| Apr 5, 2024 | 0.62% (0.00618) | 78.43th | v3 (v2023.03.01) |
| Nov 16, 2023 | 0.62% (0.00618) | 76.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.70% (0.00700) | 77.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.23% (0.01232) | 67.28th | v2 (v2022.01.01) |
| Dec 23, 2022 | 1.23% (0.01232) | 66.86th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.23% (0.01232) | 64.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.23% (0.01232) | 41.02th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (7)
- http://osvdb.org/58333 vdb-entryx_refsource_OSVDB
- http://tools.cisco.com/security/center/viewAlert.x?alertId=18893 x_refsource_CONFIRMVendor Advisory
- http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html x_refsource_CONFIRMVendor Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html x_refsource_CONFIRMVendor Advisory
- http://www.securitytracker.com/id?1022930 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2009/2759 vdb-entryx_refsource_VUPEN
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/58333 | vdb-entryx_refsource_OSVDB | |
| http://tools.cisco.com/security/center/viewAlert.x?alertId=18893 | x_refsource_CONFIRMVendor Advisory | |
| http://www.cisco.com/en/US/products/products_applied_mitigation_bulletin09186a0080af8113.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8115.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep09.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.securitytracker.com/id?1022930 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2009/2759 | vdb-entryx_refsource_VUPEN |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Sep 28, 2009
Updated Aug 7, 2024
Reserved Aug 19, 2009
Link CVE-2009-2872
CISA Vulnrichment
Updated n/a