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No exploitation reportedFix available

CVE-2020-25193

No exploitation reported by the sources we read.

  • Published2022-03-18
  • Fixed in08a06
  • WeaknessCWE-321 · CWE-798

Am I 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

By having access to the hard-coded cryptographic key for GE Reason RT430, RT431 & RT434 GNSS clocks in firmware versions prior to version 08A06, attackers would be able to intercept and decrypt encrypted traffic through an HTTPS connection.

Timeline

dates in UTC
  1. 2022-03-1818:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-25193?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-25193?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Ge rt430 firmwareversion to verify
BranchAffectedFixed in
8.x< 08a0608a06
Ge rt431 firmwareversion to verify
BranchAffectedFixed in
8.x< 08a0608a06
Ge rt434 firmwareversion to verify
BranchAffectedFixed in
8.x< 08a0608a06

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-21-005-03 CISA1 known affected

    GE Reason RT43X Clocks

    RT430 RT431 & RT434: all versions prior to Version 08A06

Full record on NVD

Fix

  1. Update Ge rt430 firmware to 08a06
  2. Mitigation from the vendor CISA ICSA-21-005-03 · 1 productGE strongly recommends users of Reason RT43X products update their units to firmware Version 08A06 or greater to resolve these issues. The firmware update addresses both vulnerabilities as described in the Reason RT43X 08A06 Release Notes.
  3. Mitigation from the vendor CISA ICSA-21-005-03 · 1 productGE recommends users evaluate current risk and implement appropriate network security mitigation measures as follows. The following mitigation actions do not ensure complete security but should be considered until the affected time synchronization product is upgraded:
  4. Mitigation from the vendor CISA ICSA-21-005-03 · 1 productUse strong network and physical security protection to prevent an attacker from reaching the local network where Reason RT43X clocks are normally installed.
  5. Mitigation from the vendor CISA ICSA-21-005-03 · 1 productBlock TCP/IP Ports 80 and 443 to block the HTTP/HTTPS access to web interface with Reason RT43X products, avoiding all the vulnerabilities. This TCP/IP port blocking should be limited to the Ethernet port interface where the Reason RT43X clock is connected (e.g., using Access Control List (ACL)). O…
  6. Mitigation from the vendor CISA ICSA-21-005-03 · 1 productMinimize network exposure for all control system devices and/or systems and ensure they are not accessible from the Internet.
  7. Mitigation from the vendor CISA ICSA-21-005-03 · 1 productAnalyze security events to early detect unexpected traffic/communication.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-04-16
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.15.3read 2026-10-23
  • NVDCVSS 3.15.3read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-321read 2026-10-23
  • NVDweakness (CWE)CWE-798read 2026-10-23
  • FIRST EPSSEPSS score0.9 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Published
2022-03-18
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-25193?

By having access to the hard-coded cryptographic key for GE Reason RT430, RT431 & RT434 GNSS clocks in firmware versions prior to version 08A06, attackers would be able to intercept and decrypt encrypted traffic through an HTTPS connection.

Is CVE-2020-25193 actively exploited?

Active exploitation of CVE-2020-25193 has not been confirmed. Its EPSS score was 0.9% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-25193?

CVE-2020-25193 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

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