Cisco IOS Software for Cisco 800 Series Industrial Integrated Services Routers Image Verification Bypass Vulnerability
Published Jun 3, 2020
6.7
MEDIUMCVSS 3.1
EPSS 0.32%
Description
A vulnerability in the image verification feature of Cisco IOS Software for Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) could allow an authenticated, local attacker to boot a malicious software image on an affected device. The vulnerability is due to insufficient access restrictions on the area of code that manages the image verification feature. An attacker could exploit this vulnerability by first authenticating to the targeted device and then logging in to the Virtual Device Server (VDS) of an affected device. The attacker could then, from the VDS shell, disable Cisco IOS Software integrity (image) verification. A successful exploit could allow the attacker to boot a malicious Cisco IOS Software image on the targeted device. To exploit this vulnerability, the attacker must have valid user credentials at privilege level 15.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| Cisco | Cisco IOS 12.2(60)EZ16 | n/a |
|
- 12.2\(60\)ez16
- 15.0\(2\)sg11a
- 15.3\(3\)jaa1
- 15.3\(3\)jpj
- 15.5\(3\)m0a
- 15.5\(3\)m1
- 15.5\(3\)m2
- 15.5\(3\)m2a
- 15.5\(3\)m3
- 15.5\(3\)m4
- 15.5\(3\)m4a
- 15.5\(3\)m5
- 15.5\(3\)m6
- 15.5\(3\)m6a
- 15.5\(3\)m7
- 15.5\(3\)m8
- 15.5\(3\)m9
- 15.5\(3\)m10
- 15.5\(3\)m11
- 15.6\(1\)t
- 15.6\(1\)t0a
- 15.6\(1\)t1
- 15.6\(1\)t2
- 15.6\(1\)t3
- 15.6\(3\)m
- 15.6\(3\)m0a
- 15.6\(3\)m1
- 15.6\(3\)m1b
- 15.6\(3\)m2
- 15.6\(3\)m3
- 15.6\(3\)m3a
- 15.6\(3\)m4
- 15.6\(3\)m5
- 15.6\(3\)m6
- 15.6\(3\)m6a
- 15.6\(3\)m6b
- 15.6\(3\)m7
- 15.6\(3\)m8
- 15.6\(3\)m9
- 15.7\(3\)m
- 15.7\(3\)m1
- 15.7\(3\)m2
- 15.7\(3\)m3
- 15.7\(3\)m4
- 15.7\(3\)m4a
- 15.7\(3\)m4b
- 15.7\(3\)m5
- 15.7\(3\)m6
- 15.7\(3\)m7
- 15.8\(3\)m
- 15.8\(3\)m0a
- 15.8\(3\)m1
- 15.8\(3\)m2
- 15.8\(3\)m2a
- 15.8\(3\)m3
- 15.8\(3\)m4
- 15.8\(3\)m5
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.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Nov 15, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.32% (0.00321) | 22.91th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.32% (0.00321) | 25.35th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.40% (0.01404) | 49.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.98% (0.00985) | 27.20th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.22% (0.00221) | 0.00th | v1 |
References (1)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-ir800-img-verif-wHhLYHjK vendor-advisoryx_refsource_CISCOPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-ir800-img-verif-wHhLYHjK | vendor-advisoryx_refsource_CISCOPatchVendor Advisory |
Change history (0)
No recorded changes yet.