Cisco
Cisco ASA and FTD Information Disclosure Vulnerability
At a glance
Actively exploited in the wild — prioritise confirming exposure.
High rather than Critical: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Cisco Secure Firewall Threat Defense, treat it as Critical.
Briefing
- Do not treat uncorroborated claims as confirmed breaches.
Questions to ask IT
- Do we run Cisco Secure Firewall Threat Defense, and which versions?
- Is any of it reachable from the internet?
- Have we checked whether it has already been used against us?
- If it is still not patched, what mitigation is in place, and what is holding the fix up?
Next steps
- Confirm exposure and remediation status for affected products
Vulnerability facts
Full CVE detail CVE-2020-3259- 7.5 · HighExploitable over the network without any account, and no one has to click or open anything. High impact on confidentiality.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Listed: attacks using it have been seen
- Elevated attack likelihood (~71.5% in 30 days)
These facts are for CVE-2020-3259. This event covers 4 more CVEs, each with its own record.
No technical write-up beyond these facts and the summary below yet.
Next steps
- Confirm whether affected products/versions are present and prioritise patching or mitigations
Summary
- CVE-2020-3259 is confirmed as exploited in the wild (US known-exploited catalogue)
- CVE-2020-3259 has an estimated ~71.8% chance of attack in 30 days (99.4th percentile) as of 2026-10-20 — probability signal, not confirmed exploitation
- CVE-2023-20269 is confirmed as exploited in the wild (US known-exploited catalogue)
- CVE-2024-40711 is confirmed as exploited in the wild (US known-exploited catalogue)
Read the original reportCISA Cybersecurity Advisories(opens in a new tab)
Products and services involved
- Cisco Secure Firewall Threat Defense93% match confidence · CVE-2020-3259
Pulse
Last checked 3d ago · Recheck overdue since 6 Nov 2026, 11:38 UK time
- Story20 Oct 2026, 21:32 UK time · 20 Oct
Linked reporting from CISA Cybersecurity Advisories (official authority).
Read source (CISA Cybersecurity Advisories)
1 entry so far. The timeline chart appears once this story has more history.
Sources
- CISA Cybersecurity AdvisoriesOfficial
#StopRansomware: SafePay Ransomware
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Cisco ASA and FTD Information Disclosure Vulnerability
- ConfirmedCVE identifier95% confidence
Event involves CVE-2020-3259
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2020-3259 is confirmed as exploited in the wild (US known-exploited catalogue)
- ConfirmedEstimated attack likelihood95% confidence
CVE-2020-3259 has an estimated ~71.8% chance of attack in 30 days (99.4th percentile) as of 2026-10-20 — probability signal, not confirmed exploitation
- ConfirmedCVE identifier95% confidence
Event involves CVE-2023-20269
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2023-20269 is confirmed as exploited in the wild (US known-exploited catalogue)
- ConfirmedEstimated attack likelihood95% confidence
CVE-2023-20269 has an estimated ~25.5% chance of attack in 30 days (97.9th percentile) as of 2026-10-20 — probability signal, not confirmed exploitation
- ConfirmedCVE identifier95% confidence
Event involves CVE-2023-27532
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2023-27532 is confirmed as exploited in the wild (US known-exploited catalogue)
- ConfirmedEstimated attack likelihood95% confidence
CVE-2023-27532 has an estimated ~81.3% chance of attack in 30 days (99.6th percentile) as of 2026-10-20 — probability signal, not confirmed exploitation
- ConfirmedCVE identifier95% confidence
Event involves CVE-2024-40711
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2024-40711 is confirmed as exploited in the wild (US known-exploited catalogue)