Security readout for executives and security teams
Plain-English summary
CryptoLib before 1.4.3 can crash when processing an oversized Base64 value returned by its KMC service integration. In mission or ground-system contexts using CryptoLib for SDLS-EP communications, this could disrupt availability and may allow code execution under certain conditions. The issue is fixed in CryptoLib 1.4.3.
Executive priority
Treat as high priority for any spacecraft, ground-station, or test environment relying on affected CryptoLib KMC integration. The main business risk is service disruption in security-critical communications, with possible code execution noted by the advisory. Patch affected deployments promptly.
Technical view
CVE-2026-22697 is a heap buffer overflow in NASA CryptoLib’s KMC JSON Base64 decode handling for base64ciphertext/base64cleartext fields. The destination buffer is sized from an expected output length, while decoding uses actual Base64 input length without enforcing the destination size. A malicious oversized KMC JSON response can write out of bounds. CVSS is 7.5 high.
Likely exposure
Exposure is likely limited to organizations using NASA CryptoLib before 1.4.3 with KMC crypto service integration. Systems not using CryptoLib, not using KMC integration, or already on 1.4.3 are not indicated as affected by the provided sources.
Exploitation context
The sources describe network-reachable, unauthenticated conditions with low attack complexity and no user interaction. They do not state active exploitation, and the CVE is not marked KEV in the provided bundle. Practical risk depends on whether an attacker can influence or impersonate the KMC JSON response path.
Researcher notes
Key review area is KMC service response parsing and Base64 decode buffer sizing before 1.4.3. The provided data supports CWE-122 heap overflow and availability impact. Code execution is described as possible under certain conditions, but no public exploit or active exploitation evidence is provided.
Mitigation direction
- Upgrade NASA CryptoLib to version 1.4.3 or later.
- Prioritize systems using KMC crypto service integration.
- Restrict and monitor trust paths to KMC service responses.
- If upgrade timing is unclear, check NASA CryptoLib advisory and release notes.
Validation and detection
- Inventory applications and mission systems embedding NASA CryptoLib.
- Confirm deployed CryptoLib versions are 1.4.3 or later.
- Identify whether KMC JSON base64ciphertext or base64cleartext handling is enabled.
- Review change management records for CryptoLib 1.4.3 deployment.
- Monitor logs for unexpected KMC response parsing failures or crashes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-122: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-22697 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-qjx3-83jh-2jc4CVE reference · x_refsource_CONFIRM
- https://github.com/nasa/CryptoLib/releases/tag/v1.4.3CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.