What it is
CVE-2017-6744 is a vulnerability affecting Cisco, IntelliShield IOS, Universal Product. The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2017-6744
IOS
Cisco, IntelliShield / IOS · 12.1(3)XI
- Severity
- CVSS 8.8 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 7.3%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV.
Who is affected?
Cisco, IntelliShield / IOS 12.1(3)xi.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
IOS
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.
The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.
Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.
There are workarounds that address these vulnerabilities.
Vendor
Product
Affected
Status
Cisco
Affected
IOS
12.1(3)XI
12.2(1b)DA
12.2(5)DA
12.2(7)DA
12.2(12)DA
12.2(10)DA5
12.2(12)DA10
12.2(10)DA
12.2(12)DA1
12.2(12)DA6
12.2(10)DA8
12.2(12)DA8
12.2(12)DA11
12.2(12)DA9
12.2(12)DA4
12.2(10)DA3
12.2(5)DA1
12.2(12)DA13
12.2(12)DA12
12.2(12)DA7
12.2(1b)DA1
12.2(10)DA1
12.2(10)DA6
12.2(10)DA4
12.2(12)DA2
12.2(12)DA3
12.2(10)DA2
12.2(12)DA5
12.2(10)DA7
12.2(10)DA9
12.2(4)XL2
12.2(4)XM
12.2(4)XM3
12.2(4)XM2
12.2(4)XM4
12.2(4)XM1
12.2(3d)
12.2(5b)
12.2(1)XS1a
12.2(4)YA
12.2(4)YA6
12.2(4)YA3
12.2(4)YA4
12.2(4)YA1
12.2(4)YA11
12.2(4)YA2
12.2(4)YA9
12.2(4)YA8
12.2(4)YA5
12.2(4)YA12
12.2(4)YA10
12.2(4)YA7
12.2(4)YG
12.2(2)XF2
12.2(2)DD2
12.2(1)XD
12.2(1)XD4
12.2(1)XD3
12.2(1)XD1
12.2(2)XH
12.2(2)XH2
12.2(2)XI
12.2(2)XI1
12.2(2)XI2
12.2(2)XK
12.2(2)XK3
12.2(2)XK2
12.2(4)BW1a
12.2(2)BX
12.2(2)BX1
12.2(15)BZ2
12.2(2)DX3
12.2(8)YJ
12.2(8)YJ1
12.2(8)YN
12.2(9)YO
12.2(9)YO3
12.2(9)YO2
12.2(9)YO1
12.2(9)YO4
12.2(1a)XC
12.2(2)XC
12.2(1a)XC1
12.2(1a)XC3
12.2(2)XC1
12.2(1a)XC2
12.2(2)XC2
12.2(11)YP3
12.2(8)YM
12.2(11)YU
12.2(11)YV
12.2(11)YV1
12.2(13)ZG
12.2(13)ZH
12.2(13)ZH9
12.2(13)ZH2
12.2(13)ZH8
12.2(13)ZH10
12.2(13)ZH4
12.2(13)ZH3
12.2(13)ZH7
12.2(13)ZH6
12.3(9a)
12.3(15)
12.3(19)
12.3(10f)
12.3(10a)
12.3(1)
12.3(1a)
12.3(10)
12.3(10b)
12.3(10c)
12.3(10d)
12.3(10e)
12.3(12b)
12.3(12a)
12.3(12c)
12.3(12d)
12.3(12e)
12.3(12)
12.3(13)
12.3(13a)
12.3(13b)
12.3(15a)
12.3(16)
12.3(17)
12.3(17a)
12.3(17b)
12.3(18)
12.3(20)
12.3(3f)
12.3(3e)
12.3(3g)
12.3(3c)
12.3(3b)
12.3(3a)
12.3(3)
12.3(3i)
12.3(3h)
12.3(5c)
12.3(5b)
12.3(5a)
12.3(5)
12.3(5f)
12.3(5e)
12.3(5d)
12.3(6f)
12.3(6e)
12.3(6c)
12.3(6b)
12.3(6a)
12.3(6)
12.3(9d)
12.3(9e)
12.3(9)
12.3(9b)
12.3(9c)
12.3(16a)
12.3(15b)
12.3(21)
12.3(22)
12.3(21b)
12.3(23)
12.3(26)
12.3(20a)
12.3(22a)
12.3(25)
12.3(17c)
12.3(24)
12.3(19a)
12.3(24a)
12.3(18a)
12.3(11)T
12.3(7)T12
12.3(11)T11
12.3(11)T10
12.3(14)T7
12.3(14)T
12.3(8)T
12.3(2)T
12.3(4)T
12.3(7)T
12.3(8)T9
12.3(2)T9
12.3(8)T6
12.3(4)T2a
12.3(4)T9
12.3(4)T4
12.3(2)T1
12.3(11)T5
12.3(7)T3
12.3(2)T2
12.3(8)T3
12.3(4)T7
12.3(8)T7
12.3(11)T8
12.3(7)T2
12.3(8)T4
12.3(8)T8
12.3(14)T5
12.3(11)T3
12.3(4)T10
12.3(2)T4
12.3(8)T10
12.3(14)T2
12.3(4)T2
12.3(7)T7
12.3(7)T10
12.3(7)T4
12.3(11)T6
12.3(7)T11
12.3(4)T6
12.3(2)T3
12.3(2)T5
12.3(2)T6
12.3(4)T3
12.3(14)T3
12.3(2)T8
12.3(11)T4
12.3(7)T9
12.3(8)T11
12.3(11)T9
12.3(7)T8
12.3(4)T1
12.3(8)T5
12.3(4)T11
12.3(4)T8
12.3(14)T1
12.3(11)T2
12.3(7)T6
12.3(2)T7
12.3(11)T7
12.3(7)T1
12.3(14)T6
12.3(8)T1
12.3(2)XA
12.3(2)XA4
12.3(2)XA7
12.3(2)XA3
12.3(2)XA6
12.3(2)XA5
12.3(4)XQ
12.3(4)XQ1
12.3(11)XL
12.3(11)XL1
12.3(4)XK3
12.3(4)XK1
12.3(4)XK4
12.3(4)XK
12.3(4)XK2
12.3(7)XI1b
12.3(7)XI2a
12.3(7)XI1c
12.3(7)XI8c
12.3(4)XG
12.3(4)XG3
12.3(4)XG1
12.3(4)XG4
12.3(4)XG2
12.3(4)XG5
12.3(2)XF
12.3(2)XE
12.3(2)XE5
12.3(2)XE2
12.3(2)XE1
12.3(2)XE4
12.3(2)XE3
12.3(4)XD
12.3(4)XD4
12.3(4)XD1
12.3(4)XD3
12.3(4)XD2
12.3(2)XC
12.3(2)XC2
12.3(2)XC1
12.2(25)SE2
12.2(29)SV2
12.3(7)XR
12.3(7)XR4
12.3(7)XR3
12.3(7)XR5
12.3(7)XR6
12.3(7)XR2
12.3(7)XR7
12.3(8)XX
12.3(8)XX1
12.3(8)XX2d
12.3(2)XZ1
12.3(2)XZ2
12.3(8)YA
12.3(8)YA1
12.3(11)YF2
12.3(8)YG
12.3(8)YG5
12.3(8)YG3
12.3(8)YG6
12.3(8)YG2
12.3(8)YG1
12.3(8)YG4
12.2(12b)M1
12.2(12h)M1
12.2(4)XV
12.2(4)XV1
12.2(4)XV2
12.2(4)XV4
12.2(4)XV4a
12.2(4)XV3
12.2(4)XV5
12.3(8)YI2
12.3(8)YI3
12.3(8)YI1
12.3(11)YK
12.3(11)YK1
12.3(11)YK2
12.3(11)YK3
12.2(18)SO1
12.2(18)SO3
12.2(18)SO2
12.3(2)JA3
12.3(2)JA4
12.3(11)JA3
12.3(11)JA2
12.3(11)YS
12.3(11)YS1
12.3(11)YS2
12.4(3e)
12.4(7b)
12.4(8)
12.4(5b)
12.4(7a)
12.4(3d)
12.4(1)
12.4(1a)
12.4(1b)
12.4(1c)
12.4(10)
12.4(3)
12.4(3a)
12.4(3b)
12.4(3c)
12.4(3f)
12.4(5)
12.4(5a)
12.4(7c)
12.4(7)
12.4(8a)
12.4(8b)
12.4(7d)
12.4(3g)
12.4(8c)
12.4(10b)
12.4(12)
12.4(12a)
12.4(12b)
12.4(13)
12.4(13a)
12.4(13b)
12.4(13c)
12.4(7e)
12.4(17)
12.4(25e)
12.4(18b)
12.4(18e)
12.4(25g)
12.4(3i)
12.4(3j)
12.4(23b)
12.4(3h)
12.4(7h)
12.4(25a)
12.4(16)
12.4(13d)
12.4(25)
12.4(25c)
12.4(19)
12.4(13e)
12.4(25b)
12.4(23)
12.4(10c)
12.4(21)
12.4(16b)
12.4(16a)
12.4(23a)
12.4(25d)
12.4(7f)
12.4(18)
12.4(21a)
12.4(13f)
12.4(25f)
12.4(18c)
12.4(5c)
12.4(8d)
12.4(12c)
12.4(17a)
12.4(18a)
12.4(17b)
12.4(7g)
12.3(8)JK
12.4(6)MR1
12.4(11)MR
12.4(2)MR
12.4(4)MR
12.4(6)MR
12.4(9)MR
12.4(12)MR
12.4(16)MR
12.4(16)MR1
12.4(19)MR2
12.4(19)MR1
12.4(19)MR
12.4(20)MR
12.4(4)MR1
12.4(19)MR3
12.4(12)MR1
12.4(20)MR2
12.4(16)MR2
12.4(12)MR2
12.4(2)MR1
12.4(20)MR1
12.4(4)T
12.4(4)T1
12.4(4)T2
12.4(4)T3
12.4(6)T
12.4(6)T1
12.4(6)T2
12.4(9)T
12.4(4)T4
12.4(2)T5
12.4(6)T3
12.4(2)T
12.4(11)T
12.4(15)T
12.4(20)T
12.4(24)T
12.4(24)T3
12.4(4)T8
12.4(20)T1
12.4(22)T1
12.4(15)T9
12.4(11)T4
12.4(15)T8
12.4(6)T5
12.4(15)T15
12.4(24)T5
12.4(15)T2
12.4(6)T8
12.4(15)T12
12.4(24)T4
12.4(6)T11
12.4(9)T5
12.4(20)T3
12.4(6)T4
12.4(4)T6
12.4(22)T
12.4(20)T6
12.4(9)T3
12.4(24)T8
12.4(6)T7
12.4(15)T13
12.4(6)T10
12.4(15)T3
12.4(24)T2
12.4(22)T5
12.4(2)T3
12.4(15)T10
12.4(22)T4
12.4(20)T5
12.4(9)T6
12.4(15)T4
12.4(2)T4
12.4(24)T1
12.4(9)T4
12.4(24)T7
12.4(22)T3
12.4(9)T1
12.4(24)T6
12.4(6)T9
12.4(15)T5
12.4(4)T7
12.4(20)T2
12.4(2)T1
12.4(11)T1
12.4(15)T11
12.4(2)T6
12.4(2)T2
12.4(15)T7
12.4(11)T2
12.4(9)T7
12.4(15)T14
12.4(11)T3
12.4(15)T6
12.4(15)T16
12.4(15)T1
12.4(9)T2
12.4(6)T6
12.4(22)T2
12.4(4)T5
12.4(20)T4
12.4(15)T17
12.3(14)YT
12.3(14)YT1
12.3(7)JX2
12.3(7)JX
12.3(7)JX1
12.3(7)JX4
12.3(11)JX
12.3(7)JX7
12.3(7)JX12
12.3(7)JX9
12.3(7)JX10
12.3(11)JX1
12.3(7)JX6
12.3(7)JX5
12.3(7)JX3
12.3(7)JX11
12.3(7)JX8
12.3(4)TPC11b
12.3(4)TPC11a
12.4(2)XA
12.4(2)XA1
12.4(2)XA2
12.2(28)ZX
12.4(4)XC
12.4(4)XC1
12.4(4)XC5
12.4(4)XC7
12.4(4)XC3
12.4(4)XC4
12.4(4)XC2
12.4(4)XC6
12.4(6)XE
12.4(6)XE2
12.4(6)XE1
12.3(11)YZ1
12.3(11)YZ
12.3(11)YZ2
12.4(11)SW
12.4(15)SW6
12.4(15)SW
12.4(11)SW1
12.4(15)SW5
12.4(15)SW1
12.4(15)SW4
12.4(11)SW3
12.4(11)SW2
12.4(15)SW3
12.4(15)SW2
12.4(15)SW7
12.4(15)SW8
12.4(15)SW8a
12.4(15)SW9
12.4(11)XJ
12.4(11)XJ3
12.4(11)XJ2
12.4(11)XJ4
12.4(6)XT
12.4(6)XT1
12.4(6)XT2
12.4(11)MD2
12.4(11)XV
12.4(11)XV1
12.4(11)XW
12.4(11)XW3
12.4(11)XW7
12.4(11)XW10
12.4(11)XW8
12.4(11)XW9
12.4(11)XW6
12.4(11)XW4
12.4(11)XW1
12.4(11)XW5
12.4(11)XW2
12.4(3g)JMA1
12.4(15)XY4
12.4(15)XY5
12.4(15)XY1
12.4(15)XY
12.4(15)XY2
12.4(15)XY3
12.4(15)XZ
12.4(15)XZ2
12.4(15)XZ1
12.3(8)ZA
12.2(33)STE0
12.4(10b)JDA1
12.4(3g)JMB
12.4(23c)JY
12.4(10b)JDC
12.4(10b)JDD
15.0(1)M1
15.0(1)M5
15.0(1)M4
15.0(1)M3
15.0(1)M2
15.0(1)M6
15.0(1)M
15.0(1)M7
15.0(1)M10
15.0(1)M9
15.0(1)M8
15.0(1)XA2
15.0(1)XA4
15.0(1)XA1
15.0(1)XA3
15.0(1)XA
15.0(1)XA5
15.1(2)T
15.1(1)T4
15.1(3)T2
15.1(1)T1
15.1(2)T0a
15.1(3)T3
15.1(1)T3
15.1(2)T3
15.1(2)T4
15.1(1)T2
15.1(3)T
15.1(2)T2a
15.1(3)T1
15.1(1)T
15.1(2)T2
15.1(2)T1
15.1(2)T5
15.1(3)T4
15.1(1)T5
15.1(1)XB
15.0(1)XO1
15.0(1)XO
15.0(2)XO
12.2(33)MRA
12.2(33)MRB5
12.2(33)MRB2
12.2(33)MRB1
12.2(33)MRB4
12.2(33)MRB
12.2(33)MRB3
12.2(33)MRB6
15.3(1)T
15.3(2)T
15.3(1)T1
15.3(1)T2
15.3(1)T3
15.3(1)T4
15.3(2)T1
15.3(2)T2
15.3(2)T3
15.3(2)T4
12.4(10b)JDE
15.0(1)EY
15.0(1)EY1
15.0(1)EY2
12.4(20)MRB
12.4(20)MRB1
15.1(4)M3
15.1(4)M
15.1(4)M1
15.1(4)M2
15.1(4)M6
15.1(4)M5
15.1(4)M4
15.1(4)M7
15.1(4)M10
15.1(4)M8
15.1(4)M9
12.4(3g)JMC1
12.4(3g)JMC
12.4(3g)JMC2
15.0(2)SE8
15.1(2)GC
15.1(2)GC1
15.1(2)GC2
15.1(4)GC
15.1(4)GC1
15.1(4)GC2
15.2(4)M
15.2(4)M1
15.2(4)M2
15.2(4)M4
15.2(4)M3
15.2(4)M5
15.2(4)M8
15.2(4)M10
15.2(4)M7
15.2(4)M6
15.2(4)M9
15.2(4)M6a
15.2(4)M11
15.0(2)SG11a
12.4(21a)JHC
15.0(1)EX
15.0(2)EX2
15.0(2)EX8
15.0(2)EX10
15.0(2)EX11
15.0(2)EX13
15.0(2)EX12
15.2(1)GC
15.2(1)GC1
15.2(1)GC2
15.2(2)GC
15.2(3)GC
15.2(3)GC1
15.2(4)GC
15.2(4)GC2
15.2(4)GC3
15.1(2)SY11
15.1(2)SY12
15.1(2)SY13
15.1(2)SY14
15.1(2)SY15
15.1(2)SY16
15.3(3)S10
15.4(1)T
15.4(2)T
15.4(1)T2
15.4(1)T1
15.4(1)T3
15.4(2)T1
15.4(2)T3
15.4(2)T2
15.4(1)T4
15.4(2)T4
15.2(2a)E2
15.2(3a)E
15.2(3)E4
15.2(2)E5b
15.2(6)E0c
15.1(3)MRA3
15.1(3)MRA4
15.1(3)SVB1
15.1(3)SVB2
15.4(2)S3
15.3(3)M
15.3(3)M1
15.3(3)M2
15.3(3)M3
15.3(3)M5
15.3(3)M4
15.3(3)M6
15.3(3)M7
15.3(3)M8
15.3(3)M9
15.3(3)M8a
15.2(4)JN
15.1(3)SVD
15.1(3)SVD1
15.1(3)SVD2
15.2(2)SY3
15.2(1)SY5
15.2(1)SY6
15.2(1)SY7
15.2(1)SY8
15.1(3)SVF
15.1(3)SVF1
15.1(3)SVE
15.2(4)JAZ1
15.4(1)CG
15.4(1)CG1
15.4(2)CG
15.1(3)SVG
15.5(1)T
15.5(1)T1
15.5(2)T
15.5(1)T2
15.5(1)T3
15.5(2)T1
15.5(2)T2
15.5(2)T3
15.5(2)T4
15.5(1)T4
15.5(3)M
15.5(3)M1
15.5(3)M0a
15.5(3)M2
15.5(3)M3
15.5(3)M4
15.5(3)M4a
15.5(3)M5
15.3(3)JAA1
15.0(2)SQD
15.0(2)SQD1
15.0(2)SQD2
15.0(2)SQD3
15.0(2)SQD4
15.0(2)SQD5
15.0(2)SQD6
15.0(2)SQD7
15.0(2)SQD8
15.6(1)T
15.6(2)T
15.6(1)T0a
15.6(1)T1
15.6(2)T1
15.6(1)T2
15.6(2)T2
15.6(3)M
15.6(3)M1
15.6(3)M0a
15.6(3)M1b
15.6(3)M2
15.6(3)M2a
15.1(3)SVJ2
15.3(3)JPC5
15.4(1)SY3
15.4(1)SY4
15.5(1)SY1
15.5(1)SY2
15.5(1)SY3
15.5(1)SY4
15.5(1)SY5
15.5(1)SY6
15.5(1)SY7
15.5(1)SY8
15.5(1)SY9
15.5(1)SY10
15.5(1)SY11
15.5(1)SY12
15.5(1)SY13
15.5(1)SY14
15.5(1)SY15
15.3(3)JPR1
Affected
- Published
- 17 Jul 2017
- Exploitation Reported
- 03 Mar 2022
- Attack vector
- Remote
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
Tags
cisa
ios
edge
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2017-6744
- cisco-sa-20170629-snmp sec.cloudapps.cisco.com · CVE Record https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurity...
Exploitation evidence
Why Previdian marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CISA
A trusted third party reported exploitation.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the Previdian Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-03-03 00:00 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- User-Agents
- Callback hosts
- 0
- 0
- 0
Request targets and User-Agents available in Pro. Callback host details available in Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.0
8.8
High
Potential damage if exploited. Separate from whether attackers are using it.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
7.3%
Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.
Timeline
From disclosure to observed exploitation
-
00:00 UTC
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
21:00 UTC
CVE published
Vulnerability disclosed publicly
-
00:00 UTC
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2017-6744
Sample API response{
"cve_id": "CVE-2017-6744",
"confidence": "Confirmed",
"cvss_score": 8.8,
"cvss_estimated": false,
"epss_score": 0.07292,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}