Cyber Resilience

CVE-2026-22262

Memory Safety in Oisf Suricata ≤ 7.0.14

Memory Safety
Published
27 January 2026
Modified
29 January 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.9
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0047 38th percentile
Risk Priority 46 floored blend · peak EPSS

Summary

CVE-2026-22262 is a medium-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Oisf Suricata. Its CVSS base score is 5.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 38th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

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

CVE-2026-22262 is a stack buffer overflow vulnerability in Suricata, an open-source network intrusion detection system (IDS), intrusion prevention system (IPS), and network security monitoring (NSM) engine. The flaw arises during dataset saving operations, where a fixed-size stack buffer prepares the data; oversized dataset content prior to versions 8.0.3 and 7.0.14 triggers the overflow. Published on 2026-01-27, it is rated 5.9 on the CVSS v3.1 scale (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) and maps to CWE-121 (Stack-based Buffer Overflow) and CWE-787 (Out-of-bounds Write).

An unauthenticated remote attacker with network access can exploit the vulnerability by crafting traffic that activates Suricata rules using oversized datasets, though this requires high attack complexity with no user interaction needed. Exploitation leads to a denial-of-service condition via stack overflow-induced application crash, disrupting IDS/IPS/NSM functionality without impacting confidentiality or integrity.

Patches resolving the issue are included in Suricata versions 8.0.3 and 7.0.14, with fixes detailed in GitHub commits from the OISF/suricata repository, such as 0eff24213763c2aa2bb0957901d5dc1e18414dbf, 27a2180bceaa3477419c78c54fce364398d011f1, 32609e6896f9079c175665a94005417cec7637eb, 32a1b9ae6aa80a60c073897e38a2ac6ea0f64521, and d6bc718e303ecbec5999066b8bc88eeeca743658. As a workaround, refrain from using rules with dataset `save` or `state` options.

EU & UK References

Vulnerability Data

Suricata is a network IDS, IPS and NSM engine. While saving a dataset a stack buffer is used to prepare the data. Prior to versions 8.0.3 and 7.0.14, if the data in the dataset is too large, this can result…

more

in a stack overflow. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not use rules with datasets `save` nor `state` options.

CWE(s)
CWE-121CWE-787

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1211 Exploitation for Stealth Stealth
Adversaries may exploit vulnerabilities to evade detection by hiding activity, suppressing logging, or operating within trusted or unmonitored components.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-64344Same product: Oisf Suricata
CVE-2025-64333Same product: Oisf Suricata
CVE-2025-64332Same product: Oisf Suricata
CVE-2025-64331Same product: Oisf Suricata
CVE-2025-59149Same product: Oisf Suricata
CVE-2023-4756Shared CWE-121, CWE-787
CVE-2023-45225Shared CWE-121, CWE-787
CVE-2024-4494Shared CWE-121, CWE-787
CVE-2024-4236Shared CWE-121, CWE-787
CVE-2024-4118Shared CWE-121, CWE-787

Affected Assets

oisf
suricata
≤ 7.0.14 · 8.0.0 — 8.0.3

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 2 hardening rules · 2 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and analysis can discover stack-buffer overflows before deployment.

SI-10 Information Input Validation good match

Input validation directly stops untrusted data from exceeding stack buffer bounds.

SI-16 Memory Protection good match

Memory-protection mechanisms limit the ability to execute injected code after a stack overflow.

SA-15 Development Process, Standards, and Tools partial match

Requiring documented secure-development standards and tools can mandate bounds-checked coding practices that avoid the weakness.

SA-8 Security and Privacy Engineering Principles partial match

Secure-engineering principles include bounds-checked coding and safe buffer handling that avoid introducing the flaw.

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 mostly match
prevents

Secure-development practices directly prevent introduction of stack buffer overflows.

ID.RA-01 partial match
prevents

Vulnerability scanning can discover stack buffer overflows but does not prevent their introduction.

PR.PS-02 partial match
prevents

Patching eliminates known instances of the weakness after discovery.

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing (fuzzing, static analysis) detects stack overflows before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates buffer-safety practices that directly prevent stack overflows.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify buffer-size and input-validation rules.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles include memory-safety and least-privilege stack usage.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe buffer handling that causes CWE-121.

A.8.32 Change management partial match
prevents

Change management can enforce review gates that catch unsafe memory operations before deployment.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (1 rule)
  • V-248594 OL 8 must implement address space layout randomization (ASLR) to protect its memory from unauthorized code execution. prevents CWE-121
Oracle Linux 9 (1 rule)
  • V-271452 OL 9 must use a Linux Security Module configured to enforce limits on system services. prevents CWE-121

References