What is CVE-2014-0196?

CVE-2014-0196 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.5/10. Published 2014-05-07.

How severe is CVE-2014-0196?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2014-0196 known to be exploited?

Yes. CVE-2014-0196 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-12), indicating it is being actively exploited. 70 public proof-of-concept repositories are indexed.

Vulnerability in F5 Big-Ip Access Policy Manager

CVE-2014-0196

The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.

Vulnerability class: Race Condition

Published 2014-05-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.225 (97.7th percentile), scored 2026-10-19.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.225 · newest: 0.225 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-05-12. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-06-02.

Required action: The impacted product is end-of-life and should be disconnected if still in use.

Public proof-of-concept exploits

References

www.ubuntu.com/usn/USN-2203-1 (vendor-advisory, Third Party Advisory)
support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.html (Third Party Advisory)
www.osvdb.org/106646 (vdb-entry, Broken Link)
lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.html (vendor-advisory, Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2014/05/05/6 (mailing-list, Mailing List, Third Party Advisory)
secunia.com/advisories/59262 (Broken Link, third-party-advisory)
www.ubuntu.com/usn/USN-2204-1 (vendor-advisory, Third Party Advisory)
secunia.com/advisories/59218 (Not Applicable, third-party-advisory)
www.ubuntu.com/usn/USN-2202-1 (vendor-advisory, Third Party Advisory)
www.exploit-db.com/exploits/33516 (Exploit, VDB Entry, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2014-0196?: CVE-2014-0196 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.5/10. Published 2014-05-07.
How severe is CVE-2014-0196?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2014-0196 known to be exploited?: Yes. CVE-2014-0196 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-05-12), indicating it is being actively exploited. 70 public proof-of-concept repositories are indexed.