Medium

CVE-2026-115396 — Ghidra 10.3 before 12.2 Denial of Service via Compressed Theme Archive

Ghidra 10.3 before 12.2 contains an improper handling of highly compressed data vulnerability in ThemeReader.processIconFile() that fails to limit decompressed size or compression ratio. Attackers can persuade a user to import a crafted theme ZIP whose icon entries expand to fill the host filesystem, causing later writes to fail.

Published Oct 22, 2026 · Updated Oct 29, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: VulnCheck

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.1% (30-day exploitation probability)+0
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.12%

ahead of 2% of scored CVEs · Oct 28, 2026

Affects

Nationalsecurityagency

Ghidra

CVSS base

5.5

Medium · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — github.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Nationalsecurityagency Ghidra, Nsa Ghidra).
Apply the fixed version or the patch documented under Remediation.
Exploitation requires user interaction: tighten email/web filtering and warn affected users.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Nationalsecurityagency	Ghidra	≥ 10.3 and < 12.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Nsa	Ghidra	≥ 10.3 and < 12.2	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
6.8	CVSS 4.0	Medium	—	—	disclosure@vulncheck.com via NIST National Vulnerability Database
6.8	CVSS 4.0	Medium	—	—	VulnCheck via CVE Program (cve.org) e CISA ADP
5.5	CVSS 3.1	Medium	1.8	3.6	disclosure@vulncheck.com via NIST National Vulnerability Database
5.5	CVSS 3.1	Medium	—	—	GitHub, Inc. via GitHub Security Advisories
5.5	CVSS 3.1	Medium	—	—	VulnCheck via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (score shown at the top: disclosure@vulncheck.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-409

Other CVEs with this weakness →

EPSS over time FIRST

Oct 23, 2026 → Oct 28, 2026 · 6 reading(s) · max 0.12%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Fix documented
Oct 29, 2026 · NIST National Vulnerability Database
Affected products added · nsa/ghidra
Oct 29, 2026 · NIST National Vulnerability Database
Source status changed · Awaiting Analysis → Analyzed
Oct 29, 2026 · NIST National Vulnerability Database
SSVC assessment updated
Oct 29, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · Received → Awaiting Analysis
Oct 23, 2026 · NIST National Vulnerability Database
Affected products added · nationalsecurityagency/ghidra
Oct 22, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 22, 2026
CVSS changed · 5.5
Oct 22, 2026 · NIST National Vulnerability Database
Source status changed · → Received
Oct 22, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 22, 2026 · Alertas do Telegram
CVE published
Oct 22, 2026 · VulnCheck

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 22, 2026 – Oct 23, 2026
1× Official description updated · Oct 22, 2026 – Oct 22, 2026

References

7 on the record

github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-6mj8-x8x9-7gxq
vendor-advisory, Vendor Advisory, NIST National Vulnerability Database
github.com/NationalSecurityAgency/ghidra/commit/2c2bc5be182d655c9df418ac35b9782f
patch, Patch, NIST National Vulnerability Database
www.vulncheck.com/advisories/ghidra-10.3-before-12.2-denial-of-service-via-compressed-t
third-party-advisory, Third Party Advisory, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2026-115396
GitHub Security Advisories
github.com/NationalSecurityAgency/ghidra/releases/tag/Ghidra_12.2_build
release-notes, Release Notes, NIST National Vulnerability Database
github.com/advisories/GHSA-fr5c-6rcj-3fw2
GitHub Security Advisories
github.com/NationalSecurityAgency/ghidra
product, Product, NIST National Vulnerability Database

Elsewhere on this site

Nationalsecurityagency
every CVE for this vendor

CWE-409
other pages naming this weakness

Related CVEs (same products)

Low CVE-2026-116012 Ghidra before 12.2 Integer Truncation in PackedDecode::skipAttribute Decompiler Parser 5d
Medium CVE-2026-115398 Ghidra before 12.2 Denial of Service via TAR and ZIP File System Mount 7d
Medium CVE-2026-115503 Ghidra before 12.2 Denial of Service via Compressed Extension Archive 7d
Medium CVE-2026-115397 Ghidra before 12.2 Denial of Service via Extension Archive Install 7d
Medium CVE-2026-115394 Ghidra through 12.2 Denial of Service via BinaryField Memory Allocation 7d
Medium CVE-2026-115395 Ghidra 10.3 before 12.2 Denial of Service via ThemeReader.readZipTheme() 7d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-115396 is "Ghidra 10.3 before 12.2 Denial of Service via Compressed Theme Archive", rated Medium. It affects Ghidra (Nationalsecurityagency); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.5 describes technical severity. EPSS 0.12% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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