HIGH
Race condition in the Firewall Authentication Proxy feature in Cisco IOS 12.0 through 12.4 allows remote attackers to bypass authentication, or bypass the consent web page, via a crafted request, aka Bug ID CSCsy15227
Published Sep 28, 2009
7.1
HIGHCVSS 2.0
EPSS 2.47%
Description
Race condition in the Firewall Authentication Proxy feature in Cisco IOS 12.0 through 12.4 allows remote attackers to bypass authentication, or bypass the consent web page, via a crafted request, aka Bug ID CSCsy15227.
Affected products
No data.
OR
- 12.0xk
- 12.0xr
- 12.1
- 12.1e
- 12.1ex
- 12.1t
- 12.1xc
- 12.1xh
- 12.1xi
- 12.1xj
- 12.1xm
- 12.1xp
- 12.1xr
- 12.1yb
- 12.1yd
- 12.1yf
- 12.1yi
- 12.2
- 12.2b
- 12.2bw
- 12.2cz
- 12.2dd
- 12.2ex
- 12.2ey
- 12.2fz
- 12.2ira
- 12.2irb
- 12.2irc
- 12.2ixa
- 12.2ixb
- 12.2ixc
- 12.2ixd
- 12.2ixe
- 12.2ixf
- 12.2ixg
- 12.2s
- 12.2sbc
- 12.2se
- 12.2sec
- 12.2sed
- 12.2see
- 12.2sef
- 12.2seg
- 12.2sg
- 12.2sga
- 12.2sq
- 12.2sra
- 12.2srb
- 12.2src
- 12.2su
- 12.2sx
- 12.2sxa
- 12.2sxb
- 12.2sxd
- 12.2sxe
- 12.2sxf
- 12.2sxh
- 12.2sxi
- 12.2t
- 12.2tpc
- 12.2xa
- 12.2xb
- 12.2xd
- 12.2xe
- 12.2xg
- 12.2xj
- 12.2xk
- 12.2xl
- 12.2xm
- 12.2xo
- 12.2xq
- 12.2xt
- 12.2xv
- 12.2xw
- 12.2ya
- 12.2yb
- 12.2yc
- 12.2ye
- 12.2yf
- 12.2yh
- 12.2yl
- 12.2ym
- 12.2yn
- 12.2yq
- 12.2yu
- 12.2yv
- 12.2yx
- 12.2yz
- 12.2zd
- 12.2zh
- 12.2zj
- 12.2zl
- 12.2zy
- 12.2zya
- 12.3
- 12.3b
- 12.3jk
- 12.3t
- 12.3tpc
- 12.3va
- 12.3xa
- 12.3xc
- 12.3xd
- 12.3xe
- 12.3xf
- 12.3xg
- 12.3xk
- 12.3xl
- 12.3xq
- 12.3xr
- 12.3xx
- 12.3ya
- 12.3yd
- 12.3yg
- 12.3yh
- 12.3yi
- 12.3yk
- 12.3ym
- 12.3yt
- 12.3yz
- 12.4
- 12.4mr
- 12.4t
- 12.4xa
- 12.4xd
- 12.4xe
- 12.4xf
- 12.4xj
- 12.4xk
- 12.4xt
- 12.4xv
- 12.4xw
- 12.4xy
- 12.4xz
- 12.4ya
- 12.4yb
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.
7.1 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:N/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.47% 0.02470
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02470
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 | 2.47% (0.02470) | 83.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.47% (0.02470) | 82.37th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.41% (0.00406) | 58.98th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.31% (0.00314) | 71.06th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00314) | 69.40th | v3 (v2023.03.01) |
| Apr 9, 2023 | 0.31% (0.00314) | 65.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00445) | 70.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
Weaknesses (1)
References (6)
- http://osvdb.org/58340 vdb-entryx_refsource_OSVDB
- http://tools.cisco.com/security/center/viewAlert.x?alertId=18882 x_refsource_CONFIRMVendor Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8132.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/36491 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1022935 vdb-entryx_refsource_SECTRACK
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53453 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/58340 | vdb-entryx_refsource_OSVDB | |
| http://tools.cisco.com/security/center/viewAlert.x?alertId=18882 | x_refsource_CONFIRMVendor Advisory | |
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8132.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/36491 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1022935 | vdb-entryx_refsource_SECTRACK | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/53453 | vdb-entryx_refsource_XF |
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-2009-2863
CISA Vulnrichment
Updated n/a