RARLAB · Path traversal
RARLAB WinRAR Path Traversal Vulnerability
At a glance
Actively exploited in the wild — prioritise confirming exposure.
Medium rather than High: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on RARLAB WinRAR, treat it as High.
Briefing
- Do not treat uncorroborated claims as confirmed breaches.
Questions to ask IT
- Do we run RARLAB WinRAR, 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 not yet patched, what mitigation is in place, and will the fix be done by 11 Nov?
Next steps
- Confirm exposure, mitigation status and any service interruption risk.
Vulnerability facts
Full CVE detail CVE-2025-8088- 8.4 · HighExploitable only with local access without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Listed: attacks using it have been seen (on the catalogue since )
- Elevated attack likelihood (~94% in 30 days)
- CVE-2025-8088 has estimated attack likelihood 0.94551 (~94.6% estimated chance of exploitation in 30 days; 99.8th percentile) as of 2026-07-31 — probability signal, not confirmed exploitation
Next steps
- Confirm whether affected products/versions are present and prioritise patching or mitigations
Summary
- RARLAB WinRAR contains a path traversal vulnerability affecting the Windows version of WinRAR. This vulnerability could allow an attacker to execute arbitrary code by crafting malicious archive files.
- CVE-2025-8088 is listed in known-exploited catalogue (exploitation in the wild)
- 6% estimated chance of exploitation in 30 days; 99.
- Authoritative catalogues report active exploitation of this vulnerability.
Why this matters in the UK
- Known-exploited catalogue reports exploitation in the wild
Products and services involved
- RARLAB WinRAR98% match confidence · CVE-2025-8088
Pulse
Last checked 4d ago · Recheck overdue since 5 Nov 2026, 23:39 UK time · 2 quiet checks collapsed
CISA marks known . Suggested changed to 7d.
Listed on the — prioritise confirming exposure and patching.
1 quiet check hidden.
Sources
RARLAB WinRAR Path Traversal Vulnerability
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ConfirmedHeadline90% confidence
RARLAB WinRAR Path Traversal Vulnerability
- ConfirmedSummary fact75% confidence
RARLAB WinRAR contains a path traversal vulnerability affecting the Windows version of WinRAR. This vulnerability could allow an attacker to execute arbitrary code by crafting malicious archive files. Affects RARLAB WinRAR. Known ransomware campaign use: Unknown. Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2025-8088
- ConfirmedKnown-exploited catalogue98% confidence
CVE-2025-8088 is listed in known-exploited catalogue (exploitation in the wild)
- ConfirmedEstimated attack likelihood95% confidence
CVE-2025-8088 has estimated attack likelihood 0.94551 (~94.6% estimated chance of exploitation in 30 days; 99.8th percentile) as of 2026-07-31 — probability signal, not confirmed exploitation

