Logic issue in DxeImageVerificationHandler() for EDK II may allow an authenticated user to potentially enable escalation of privilege via lo
Logic issue in DxeImageVerificationHandler() for EDK II may allow an authenticated user to potentially enable escalation of privilege via local access.
- Published
- Nov 23, 2020
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 28th percentile
- CWE
- —
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| tianocore | edk2 | cpe:2.3:a:tianocore:edk2 |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux9.0
- tianocore edk2all versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (intel). Independent of NVD's CPE analysis and usually ahead of it.
n/a Extensible Firmware Interface Development Kit (EDK II)
- EDK IIaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | edk2 | before 0~20200229.4c0f6e34-1 | 0~20200229.4c0f6e34-1 |
| Debian:9 | edk2 | before 0~20161202.7bbe0b3e-1+deb9u2 | 0~20161202.7bbe0b3e-1+deb9u2 |
| openSUSE:Leap 15.1 | ovmf | before 2017+git1510945757.b2662641d5-lp151.11.3.1 | 2017+git1510945757.b2662641d5-lp151.11.3.1 |
| openSUSE:Tumbleweed | ovmf | before 202105-3.4 | 202105-3.4 |
| SUSE:Linux Enterprise Module for Server Applications 15 SP1 | ovmf | before 2017+git1510945757.b2662641d5-5.29.3 | 2017+git1510945757.b2662641d5-5.29.3 |
| SUSE:Linux Enterprise Server 12 SP4 | ovmf | before 2017+git1510945757.b2662641d5-3.23.1 | 2017+git1510945757.b2662641d5-3.23.1 |
| SUSE:OpenStack Cloud 7 | ovmf | before 2015+git1462940744.321151f-19.10.3 | 2015+git1462940744.321151f-19.10.3 |
Same product
tianocore: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-38578Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.39Monitor
- CVE-2023-45235Buffer Overflow in EDK II Network Package35Monitor
- CVE-2023-45234Buffer Overflow in EDK II Network Package35Monitor
- CVE-2023-45230Buffer Overflow in EDK II Network Package35Monitor
- CVE-2025-2296Un-verified kernel bypass Secure Boot mechanism in direct boot mode33Monitor
- CVE-2021-38575NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.33Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:edk2 | 0~20200229.4c0f6e34-1 · Debian:12 | Package registry (OSV) |
| opensuse:ovmf | 2017+git1510945757.b2662641d5-lp151.11.3.1 · openSUSE:Leap 15.1 | Package registry (OSV) |
| suse:ovmf | 2015+git1462940744.321151f-19.10.3 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugzilla.tianocore.org/show_bug.cgi?id=1608
- lists.debian.org/debian-lts-announce/2021/04/msg00032.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.