Threats / Fortra / CVE-2023-0669
CVE-2023-0669
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Fortra GoAnywhere MFT vulnerability
Fortra GoAnywhere MFT contains a pre-authentication remote code execution vulnerability in the License Response Servlet caused by unsafe deserialization of attacker-controlled objects.
Verdict
Today item, not a backlog item.
An unauthenticated attacker can exploit unsafe object deserialization in the License Response Servlet to execute arbitrary code on affected GoAnywhere MFT instances before authentication, enabling full system compromise and data exfiltration.
CISA KEV Yes · 2023-02-105Ransomware use Flagged5EPSS 0.99999 (verify live)6Exploit Weaponized · public PoC7CVSS 7.2 (CISA)4CISA SSVC Exploitation: active · Automatable: no · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
770 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-02-10), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.99999 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 7.2 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H) · Affected: Fortra, GoAnywhere MFT. Confirm exact fixed builds in the vendor advisory.CVSS — CISA-assigned via the ADP container (CVE.org), version 3.1; the CNA left no metrics, so CISA's own score is used ahead of NVD.
Weakness (CWE)
Mapped to CWE-502 Deserialization of Untrusted Data — weakness family: Injection.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 4 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module, nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious serialized Java object and send it to the License Response Servlet endpoint without authentication.
Business
The organization's file transfer infrastructure is directly exposed to remote code execution from the internet.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I trigger deserialization of my payload, which executes arbitrary code with the privileges of the GoAnywhere MFT process.
Business
Attackers gain immediate command execution capability on critical data transfer systems.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish persistence and move laterally through the network to access sensitive files and credentials stored in the MFT system.
Business
Confidential business data, customer information, and intellectual property are compromised and exfiltrated.
4
Data at risk — exfiltration narrative 4
Attacker
I deploy ransomware or wiper malware across connected systems to encrypt or destroy data.
Business
Operations halt, recovery costs escalate, and regulatory fines accumulate from data breach notifications.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05