Vulnerability Remediation Tracker Template (ISO/IEC 27001 A.8.8)
Remediation service levels from CVSS v4.0, EPSS and CISA KEV, tracker fields, finding register, lifecycle, exceptions, on-time metrics
How to use: Use it to record every vulnerability finding from detection to verified closure under A.8.8 and the vulnerability management policy. Fill the service level matrix and the tracker fields first. The main pitfall is closing findings without a rescan or retest.
Preview
Vulnerability Remediation Tracker: [Organization name] [Period]
Working register for every vulnerability finding from discovery to verified closure: priority inputs (CVSS v4.0, EPSS, CISA KEV), the remediation due date from the service level, owner, status, exceptions and the metrics that show whether remediation keeps pace. It supports ISO/IEC 27001:2022 + Amd 1:2024 Annex A control A.8.8 (technical vulnerability management) with guidance from ISO/IEC 27002:2022, and records the operation of the vulnerability management policy (
security/vulnerability-management-policy). Replace every[bracketed]value and every row marked Example.
Document control
| Field | Value |
|---|---|
| Document ID | DOC-ISMS-072 |
| Version | [1.0] |
| Status | [Draft / In review / Approved] |
| Owner | [@vuln-owner] ([Vulnerability management lead or ISMS manager]) |
| Approvers / reviewers | [CISO or ISMS manager], [Head of IT Operations] |
| Last updated | YYYY-MM-DD |
| Classification | [Confidential] (open vulnerabilities are sensitive) |
| Standard and edition | ISO/IEC 27001:2022 + Amd 1:2024, Annex A A.8.8; ISO/IEC 27002:2022 |
| Next scheduled review | YYYY-MM-DD (snapshot monthly; fields and service levels annually) |
| Period covered | [YYYY-MM-DD to YYYY-MM-DD] |
| Data source | [Vulnerability scanner, penetration test reports, bug bounty, supplier advisories] |
| Governing policy | Vulnerability management policy (security/vulnerability-management-policy) |
Approvals
| Role | Name | Signature or record | Date |
|---|---|---|---|
| Owner | [Name] | [Reference] | YYYY-MM-DD |
| CISO or ISMS manager | [Name] | [Reference] | YYYY-MM-DD |
Revision history
| Version | Date | Author | Change summary |
|---|---|---|---|
| 1.0 | YYYY-MM-DD | [@author] | Fields, service levels and metrics defined; first monthly snapshot |
Contents
1. Purpose and use
The tracker holds every vulnerability finding in scope of the ISMS
(DOC-ISMS-002) that needs action: scanner results for infrastructure,
cloud and containers, application security test results, penetration
test findings (security/pentest-report), supplier security advisories,
and reports from researchers. Findings are grouped by asset as recorded
in the asset inventory (DOC-ISMS-012), so each one has an owner.
Asset owners update status on their findings. The vulnerability management lead checks priority, due dates and closures, and publishes a monthly snapshot of this tracker with the metrics in section 7.
2. Service levels
If the vulnerability management policy is in use, copy its matrix here (decision by asset tier, measured from detection). Otherwise use this simplified matrix, in calendar days from detection (Example):
| Priority | Rule (first match wins) | Mitigate within | Remediate within |
|---|---|---|---|
| Critical | Listed in the CISA KEV catalog, or CVSS v4.0 score 9.0 or above on an internet-facing asset | 48 hours | 7 days |
| High | CVSS v4.0 score 7.0 to 8.9, or 9.0 or above on an internal asset, or EPSS probability at or above [0.10] | n/a | 30 days |
| Medium | CVSS v4.0 score 4.0 to 6.9 | n/a | 90 days |
| Low | CVSS v4.0 score 0.1 to 3.9 | n/a | 180 days |
Inputs:
- CVSS v4.0 (FIRST): record the score, the vector string and the label for the metric groups used (CVSS-B, CVSS-BT, CVSS-BE or CVSS-BTE). Where only a CVSS v3.x score exists, record it with its version.
- EPSS (FIRST): the probability that the vulnerability is exploited in the wild in the next 30 days. Record the score and the date of the score, because EPSS changes daily.
- CISA KEV: a listing means exploitation in the wild has been seen. A finding added to KEV after detection is re-prioritised, and its due date recalculated from the date of the KEV listing.
A shorter time set by a contract or regulation for a system overrides this matrix for that system.
3. Tracker fields
| Field | Content |
|---|---|
| Finding ID | VRT-NNN, unique and never reused |
| Asset | Asset ID from the asset inventory, and environment |
| Vulnerability | CVE or tool reference, short description |
| Source | Scanner, penetration test, advisory, researcher |
| Detected | Date first detected (YYYY-MM-DD) |
| CVSS v4.0 | Score and label, vector in the tool |
| EPSS | Probability and score date |
| KEV | Yes or No, with date listed |
| Exposure | Internet-facing or internal |
| Priority | Critical, High, Medium or Low (section 2) |
| Due date | Detected date plus the service level |
| Owner | Asset owner or team |
| Status | New, Triaged, In remediation, Mitigated, Exception, Verified closed |
| Action | Patch, configuration change, upgrade, compensating control |
| Verification | Rescan or retest reference and date |
| Exception ID | Reference to section 6, if any |
4. Tracker register
| Finding ID | Asset | Vulnerability | Detected | CVSS v4.0 | EPSS | KEV | Priority | Due | Owner | Status | Verification |
|---|---|---|---|---|---|---|---|---|---|---|---|
| VRT-001 (Example) | AST-NET-004 edge VPN appliance | Remote code execution, CVE-[YYYY-NNNNN] | 2027-03-02 | 9.3 (CVSS-BT) | 0.94 | Yes | Critical | 2027-03-09 | IT operations | Verified closed | Rescan SCAN-0312, 2027-03-05 |
| VRT-002 (Example) | AST-APP-011 reporting service | Deserialisation in a Java library | 2027-03-04 | 8.7 (CVSS-B) | 0.21 | No | High | 2027-04-03 | Data engineering | In remediation | Pending |
| VRT-003 (Example) | AST-SRV-020 internal wiki | Stored cross-site scripting in a plug-in | 2027-02-15 | 5.1 (CVSS-B) | 0.01 | No | Medium | 2027-05-16 | IT operations | Triaged | Pending |
| VRT-004 (Example) | AST-SRV-033 build agent | Outdated TLS configuration | 2027-01-20 | 2.3 (CVSS-B) | 0.00 | No | Low | 2027-07-19 | Platform team | In remediation | Pending |
| VRT-005 (Example) | AST-APP-002 customer portal | Missing authorisation check found in penetration test PT-2027-01 | 2027-03-10 | 7.1 (CVSS-BE) | n/a (no CVE) | No | High | 2027-04-09 | Product engineering | In remediation | Retest planned |
| VRT-006 (Example) | AST-SRV-041 legacy file transfer appliance | Vendor end of support, no fix available | 2027-02-01 | 7.5 (CVSS-B) | 0.04 | No | High | 2027-03-03 | IT operations | Exception | EXC-VUL-001 |
5. Finding lifecycle
A finding that reappears within [90 days] (Example, as set by the policy) of verified closure is reopened under its original ID, and its due date runs from the original detection date. A later recurrence is a new finding with a new ID.
6. Exceptions
When a finding cannot be remediated within its service level, the owner
raises a security exception request (security/security-exception-request,
DOC-ISMS-122) with the reason, compensating controls, the risk score on
the 5 x 5 scale of the risk methodology (DOC-ISMS-010) and an expiry.
The exception is approved at the authority the risk methodology
(DOC-ISMS-010 section 2.4) sets for the residual risk: the risk owner
for Low; the risk owner and department head for Medium (top management
if the risk category is Averse, DOC-ISMS-015 section 9 rule 1); top
management with a treatment decision for High, recorded in the risk
acceptance record (DOC-ISMS-019). Critical residual risk is not
approvable as an exception: treat it or stop the activity. Maximum
duration is 12 months for Low or Medium and 6 months for High; at expiry
the exception is reassessed, and a renewal is a new decision
(DOC-ISMS-122 section 7).
| Exception ID | Finding | Reason | Compensating controls | Residual score | Accepted by | Expiry |
|---|---|---|---|---|---|---|
| EXC-VUL-001 (Example) | VRT-006 | Replacement appliance ordered, delivery in 10 weeks | Service restricted to two partner addresses, monitoring use case MON-UC-007 | 3 x 3 = 9 (Medium) | Risk owner (Head of IT Operations) and [department head] | 2027-06-30 |
7. Metrics
| Metric | Definition | Target (Example) |
|---|---|---|
| On-time remediation | Findings closed within service level divided by findings closed in the period | 90% or more |
| Overdue findings | Open findings past their due date at period end, by priority | 0 Critical |
| KEV exposure | Open KEV-listed findings at period end | 0 |
| Mean time to remediate | Average days from detection to verified closure, by priority | Critical under 7 days |
| Scan coverage | Assets scanned in the period divided by assets in scope | 95% or more |
| Active exceptions | Exceptions open at period end, and any past expiry | 0 past expiry |
Worked quarter (Example): Quillmere Analytics Ltd, Q1 2027.
| Item | Count |
|---|---|
| Open at start of quarter | 12 |
| Opened in quarter | 84 |
| Closed and verified in quarter | 71 |
| Open at end of quarter | 25 |
| Closed within service level | 64 |
| Overdue at end of quarter (all High or Medium) | 3 |
| Active exceptions | 1 |
Checks: 12 + 84 - 71 = 25 open at the end. On-time remediation 64 / 71 = 90.1%, just above the 90% target. No Critical or KEV-listed finding was open at the end of the quarter.
8. Size tiers
| Topic | Small: Quillmere Analytics Ltd (46 staff) | Medium: Quillmere Health Systems (320 staff) | Large: Quillmere Group (2,400 staff, 6 sites, IT and OT) |
|---|---|---|---|
| Tool | Cloud provider findings and a container scanner exported to the issue tracker; this template as the monthly snapshot | Vulnerability management platform linked to the service desk | Platform per domain (IT, cloud, OT) with a central data store and dashboards |
| Owners | Engineering teams; the part-time ISMS manager reviews monthly | IT operations and product teams; security team checks priority | Site IT and OT engineering per plant; the security office runs the programme |
| Service levels | Simplified matrix in section 2 | Policy matrix by decision and asset tier | Policy matrix plus OT-specific windows agreed with plant engineering |
| Reporting | Quarterly to management review | Monthly to the steering committee | Monthly per site, quarterly group summary to the CISO and board committee |
9. Records and evidence
| Record | Proves | Owner | Location | Retention (Example) |
|---|---|---|---|---|
| Monthly tracker snapshot with metrics | A.8.8 operates | Vulnerability management lead | [Document repository] | 3 years |
| Scan reports and coverage | Detection runs as the policy requires | Vulnerability management lead | [Scanner] | 1 year |
| Rescan and retest evidence | Closures are verified | Asset owners | [Scanner or ticketing tool] | 3 years |
| Exception records | Risk decisions for late findings | ISMS manager | Risk acceptance record (DOC-ISMS-019) | Life of exception plus 3 years |
10. References
| Reference | Edition | Use |
|---|---|---|
| ISO/IEC 27001:2022 + Amd 1:2024 | 2022, Amd 1 published 2024-02-23 | Annex A A.8.8 (cited by number), https://www.iso.org/standard/82875.html |
| ISO/IEC 27002:2022 | 2022 | Control guidance, https://www.iso.org/standard/75652.html |
| FIRST CVSS v4.0 | Published November 2023 | Severity score and vector, https://www.first.org/cvss/v4-0/ |
| FIRST EPSS | Scores updated daily; record the model version in the data feed | Probability of exploitation in the next 30 days, https://www.first.org/epss/ |
| CISA Known Exploited Vulnerabilities catalog | Continuously updated | Evidence of exploitation in the wild, https://www.cisa.gov/known-exploited-vulnerabilities-catalog |
Related templates: security/vulnerability-management-policy,
ops/patch-management-policy, security/security-exception-request,
security/pentest-report, isms/isms-risk-acceptance-record,
isms/security-monitoring-procedure, isms/control-evidence-matrix.
Standard and licence note
Structure aligned with ISO/IEC 27001:2022 (including Amd 1:2024) Annex A control A.8.8 and the guidance in ISO/IEC 27002:2022. Only the control number is used; the fields, service levels, examples and guidance are original wording, and no ISO/IEC text is reproduced. ISO and IEC standards are copyrighted: obtain the official standards from ISO, IEC or your national standards body. CVSS and EPSS are specifications of FIRST, and the KEV catalog is published by CISA; they are cited by name only. Check the current edition of every source before use. Certification decisions belong to the accredited certification body. Template licence: MIT.
Related templates
Threat and Vulnerability Catalogue Template (ISO/IEC 27005, ATT&CK)
12 threat sources, 24 threat events and 18 vulnerabilities linked to Annex A controls and ATT&CK v20 tactics, scenario building, OT entries, update route
ISMS & ISO/IEC 27001Access Control Policy Template (ISO/IEC 27001 A.5.15)
Access principles, role catalogue, joiner mover leaver SLAs, MFA and NIST SP 800-63B-4 password rules, privileged and service accounts, reviews, metrics
ISMS & ISO/IEC 27001Annex A Organizational Controls Guide Template (ISO/IEC 27001 A.5)
A.5.1 to A.5.37 in own words: intent, typical implementation, tier notes, evidence auditors sample, pitfalls, linked templates, self-check, study record