HIGH
The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664
Published Sep 27, 2012
7.8
HIGHCVSS 2.0
EPSS 3.20%
Description
The SIP implementation in Cisco Unified Communications Manager (CUCM) 6.x and 7.x before 7.1(5b)su5, 8.x before 8.5(1)su4, and 8.6 before 8.6(2a)su1; Cisco IOS 12.2 through 12.4 and 15.0 through 15.2; and Cisco IOS XE 3.3.xSG before 3.3.1SG, 3.4.xS, and 3.5.xS allows remote attackers to cause a denial of service (service crash or device reload) via a crafted SIP message containing an SDP session description, aka Bug IDs CSCtw66721, CSCtj33003, and CSCtw84664.
Affected products
No data.
OR
- 6.0\(1a\)
- 6.0\(1b\)
- 6.1\(1\)
- 6.1\(1a\)
- 6.1\(1b\)
- 6.1\(2\)
- 6.1\(3\)
- 6.1\(3a\)
- 6.1\(3b\)
- 6.1\(4\)
- 6.1\(4a\)
- 6.1\(4b\)
- 6.1\(5\)
- 7.1\(1\)
- 7.1\(2\)
- 7.1\(2a\)
- 7.1\(2b\)
- 7.1\(3\)
- 7.1\(3a\)
- 7.1\(3b\)
- 7.1\(5\)
- 7.1\(5a\)
- 7.1\(5b\)
- 7.1\(5b\)su1
- 7.1\(5b\)su1a
- 7.1\(5b\)su2
- 7.1\(5b\)su3
- 7.1\(5b\)su4
- 8.0
- 8.0\(1\)
- 8.0\(2\)
- 8.0\(2a\)
- 8.0\(2b\)
- 8.0\(2c\)
- 8.0\(3\)
- 8.0\(3a\)
- 8.5\(1\)su1
- 8.5\(1\)su2
- 8.5\(1\)su3
- 12.2
- 12.2b
- 12.2bc
- 12.2bw
- 12.2bx
- 12.2by
- 12.2bz
- 12.2ca
- 12.2cx
- 12.2cy
- 12.2cz
- 12.2da
- 12.2dd
- 12.2dx
- 12.2ew
- 12.2ewa
- 12.2ex
- 12.2ey
- 12.2ez
- 12.2fx
- 12.2fy
- 12.2fz
- 12.2irb
- 12.2ixa
- 12.2ixb
- 12.2ixc
- 12.2ixd
- 12.2ixe
- 12.2ixf
- 12.2ixg
- 12.2l
- 12.2mb
- 12.2rc
- 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
- 12.2sr
- 12.2sra
- 12.2srb
- 12.2src
- 12.2su
- 12.2sv
- 12.2sva
- 12.2svc
- 12.2svd
- 12.2sve
- 12.2sw
- 12.2sx
- 12.2sxa
- 12.2sxb
- 12.2sxd
- 12.2sxe
- 12.2sxf
- 12.2sxi
- 12.2sy
- 12.2sz
- 12.2t
- 12.2tpc
- 12.2xa
- 12.2xb
- 12.2xc
- 12.2xd
- 12.2xe
- 12.2xf
- 12.2xg
- 12.2xh
- 12.2xi
- 12.2xj
- 12.2xk
- 12.2xl
- 12.2xm
- 12.2xn
- 12.2xnb
- 12.2xnc
- 12.2xnd
- 12.2xo
- 12.2xq
- 12.2xr
- 12.2xs
- 12.2xt
- 12.2xu
- 12.2xv
- 12.2xw
- 12.2ya
- 12.2yb
- 12.2yc
- 12.2yd
- 12.2ye
- 12.2yf
- 12.2yg
- 12.2yh
- 12.2yj
- 12.2yk
- 12.2yl
- 12.2ym
- 12.2yn
- 12.2yo
- 12.2yp
- 12.2yq
- 12.2yr
- 12.2ys
- 12.2yt
- 12.2yu
- 12.2yv
- 12.2yw
- 12.2yx
- 12.2yy
- 12.2yz
- 12.2za
- 12.2zb
- 12.2zc
- 12.2zd
- 12.2ze
- 12.2zf
- 12.2zg
- 12.2zh
- 12.2zj
- 12.2zl
- 12.2zp
- 12.2zu
- 12.2zx
- 12.2zy
- 12.2zya
- 12.3
- 12.3b
- 12.3bc
- 12.3bw
- 12.3ja
- 12.3jea
- 12.3jeb
- 12.3jec
- 12.3jk
- 12.3jl
- 12.3jx
- 12.3t
- 12.3tpc
- 12.3va
- 12.3xa
- 12.3xb
- 12.3xc
- 12.3xd
- 12.3xe
- 12.3xf
- 12.3xg
- 12.3xi
- 12.3xk
- 12.3xl
- 12.3xq
- 12.3xr
- 12.3xs
- 12.3xu
- 12.3xw
- 12.3xx
- 12.3xy
- 12.3xz
- 12.3ya
- 12.3yd
- 12.3yf
- 12.3yg
- 12.3yh
- 12.3yj
- 12.3yk
- 12.3ym
- 12.3yq
- 12.3ys
- 12.3yt
- 12.3yu
- 12.3yx
- 12.3yz
- 12.3za
- 15.0
- 15.0\(1\)s1
- 15.0\(1\)s2
- 15.0\(1\)se
- 15.0m
- 15.0mr
- 15.0mra
- 15.0s
- 15.0sa
- 15.0sg
- 15.0xa
- 15.0xo
- 15.1
- 15.1\(1\)xb1
- 15.1\(2\)t
- 15.1\(3\)t
- 15.1\(4\)m
- 15.1\(4\)m1
- 15.1ey
- 15.1gc
- 15.1m
- 15.1s
- 15.1t
- 15.1xb
- 15.2
- 3.3.0sg
- 3.3.1s
- 3.3.1sg
- 3.4.0as
- 3.4.0s
- 3.4.1s
- 3.4.2s
- 3.4.3s
- 3.4.xs
- 3.5.0s
- 3.5.1s
- 3.5.2s
- 3.5.xs
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.
7.8 HIGH NVD
AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication None
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.
3.20% 0.03203
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03203
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.20% (0.03203) | 87.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.20% (0.03203) | 86.44th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.93% (0.00932) | 74.53th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.91% (0.00905) | 83.45th | v3 (v2023.03.01) |
| Mar 3, 2024 | 0.91% (0.00905) | 82.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.91% (0.00905) | 80.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (5)
- http://osvdb.org/85816 vdb-entryx_refsource_OSVDBBroken Link
- http://secunia.com/advisories/50774 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-cucm vendor-advisoryx_refsource_CISCOVendor Advisory
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-sip vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.securityfocus.com/bid/55697 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/85816 | vdb-entryx_refsource_OSVDBBroken Link | |
| http://secunia.com/advisories/50774 | third-party-advisoryx_refsource_SECUNIANot Applicable | |
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-cucm | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-sip | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.securityfocus.com/bid/55697 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Sep 27, 2012
Updated Aug 6, 2024
Reserved Jul 10, 2012
Link CVE-2012-3949
CISA Vulnrichment
Updated n/a