CVE-2016-6253
mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.
Does this matter?
2 public exploits are published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 3.5%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.53% probability · 89th percentile
- Public exploits
- 2 in Exploit-DB · verified · first 21 July 2016
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- netbsd/netbsd
- Source
- cve@mitre.org
EPSS moved from 8.4% on 21 September 2026 to 3.5% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (2)
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
- http://akat1.pl/?id=2Exploit, Third Party Advisory
- http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.ascVendor Advisory
- http://packetstormsecurity.com/files/138021/NetBSD-mail.local-8-Local-Root.htmlExploit, Third Party Advisory, VDB Entry
- http://www.rapid7.com/db/modules/exploit/unix/local/netbsd_mail_localExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/92101Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036429Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40141/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40385/Exploit, Third Party Advisory, VDB Entry
- http://akat1.pl/?id=2Exploit, Third Party Advisory
- http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.ascVendor Advisory
- http://packetstormsecurity.com/files/138021/NetBSD-mail.local-8-Local-Root.htmlExploit, Third Party Advisory, VDB Entry
- http://www.rapid7.com/db/modules/exploit/unix/local/netbsd_mail_localExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/92101Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036429Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40141/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/40385/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.