Security Resilience

CVE-2018-14634

Memory Safety in F5 Big-Ip Access Policy Manager 11.2.1 – 11.6.4

CISA KEVActive ExploitationEUVD ExploitedPublic PoCMemory Safety
Published
25 September 2018
Modified
27 January 2026
KEV Added
26 January 2026
Patch / advisory
View advisory
CVSS Score v3 7.8
Click a component to see what it means
Raw vectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.15 97th percentile
Risk Priority 83 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2018-14634 is a high-severity Integer Overflow or Wraparound (CWE-190) vulnerability in F5 Big-Ip Access Policy Manager. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique LSA Secrets (T1003.004); ranked in the top 3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function, tracked as CVE-2018-14634 and CWE-190. The issue affects kernel versions 2.6.x, 3.10.x, and 4.14.x and carries a CVSS 3.0 base score of 7.8.

An unprivileged local user with access to an SUID binary or other privileged executable can exploit the flaw to escalate privileges on the affected system. The attack requires local access but no user interaction and results in full compromise of confidentiality, integrity, and availability.

Red Hat has published errata RHSA-2018:2748, RHSA-2018:2763, and RHSA-2018:2846 that provide updated kernels; additional details appear in the referenced Openwall and SecurityFocus entries. No information on observed in-the-wild exploitation is supplied in the source data.

EU & UK References

Vulnerability Data

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. Kernel versions 2.6.x, 3.10.x and…

more

4.14.x are believed to be vulnerable.

CWE(s)
CWE-190
KEV Date Added
26 January 2026

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

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CVE-2025-47294Same product class: VPN / SSL gateway
CVE-2024-46669Same product class: VPN / SSL gateway
CVE-2013-2729Same product: Redhat Enterprise Linux Desktopboth on KEV
CVE-2019-1579Same product: Paloaltonetworks Pan-Osboth on KEV
CVE-2015-8651Same product: Linux Linux Kernelboth on KEV
CVE-2018-6065Same product: Redhat Enterprise Linux Desktopboth on KEV
CVE-2026-0300Same product: Paloaltonetworks Pan-Osboth on KEV
CVE-2021-22893Same product class: VPN / SSL gatewayboth on KEV

Affected Assets

paloaltonetworks
pan-os
7.1.0 — 7.1.23 · 8.0.0 — 8.0.16 · 8.1.0 — 8.1.7
f5
big-ip access policy manager
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip advanced firewall manager
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip analytics
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip application acceleration manager
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip application security manager
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip domain name system
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip edge gateway
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip fraud protection service
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
f5
big-ip global traffic manager
11.2.1 — 11.6.4 · 12.1.0 — 12.1.5 · 13.0.0 — 13.1.1.5
+18 more product configuration(s) — see NVD for full list

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.2.6

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly require use of safe arithmetic, bounds checks, and testing that prevent integer overflows.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References