CVE-2020-3125
No exploitation reported by the sources we read.
- Published2020-05-06
- Fixed in9.13.1.7 · 9.12.3.2 · 9.10.1.37 · 9.9.2.66 · 9.8.4.15
- WeaknessCWE-287
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability in the Kerberos authentication feature of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to impersonate the Kerberos key distribution center (KDC) and bypass authentication on an affected device that is configured to perform Kerberos authentication for VPN or local device access. The vulnerability is due to insufficient identity verification of the KDC when a successful authentication response is received. An attacker could exploit this vulnerability by spoofing the KDC server response to the ASA device. This malicious response would not have been authenticated by the KDC. A successful attack could allow an attacker to bypass Kerberos authentication.
Timeline
dates in UTC- 2020-05-0617:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3125?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3125?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.13 | ≥ 9.13, < 9.13.1.7 | 9.13.1.7 | NVD |
| 9.12 | ≥ 9.12, < 9.12.3.2 | 9.12.3.2 | NVD |
| 9.10 | ≥ 9.10, < 9.10.1.37 | 9.10.1.37 | NVD |
| 9.9 | ≥ 9.9, < 9.9.2.66 | 9.9.2.66 | NVD |
| 9.8 | ≥ 9.8, < 9.8.4.15 | 9.8.4.15 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.10 | = 9.10\(1.220\) | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.10 | = 9.10\(1.220\) | no fix published | NVD |
10 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco ASA to 9.13.1.7 · 9.12.3.2 · 9.10.1.37 · 9.9.2.66 · 9.8.4.15
Advisories and patches
- tools.cisco.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2020-05-06
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-3125?
Is CVE-2020-3125 actively exploited?
What is the CVSS score for CVE-2020-3125?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.