CVE-2018-0491
A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 14.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10. It allows remote attackers to cause a denial of service (relay crash) because the KIST implementation allows a channel to be added more than once in the pending list.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 14.79% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · first 9 July 2018
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- torproject/tor
- Source
- security@debian.org
EPSS moved from 12.5% on 21 September 2026 to 14.8% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915Vendor Advisory
- https://trac.torproject.org/projects/tor/ticket/24700Issue Tracking, Mitigation, Vendor Advisory
- https://trac.torproject.org/projects/tor/ticket/25117Issue Tracking, Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/44994/Exploit, Third Party Advisory, VDB Entry
- https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915Vendor Advisory
- https://trac.torproject.org/projects/tor/ticket/24700Issue Tracking, Mitigation, Vendor Advisory
- https://trac.torproject.org/projects/tor/ticket/25117Issue Tracking, Patch, Vendor Advisory
- https://www.exploit-db.com/exploits/44994/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.