02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: libreswanIKEv1 default AH/ESP responder can cause libreswan to abort and restart
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.- EPSS probability
- 0.79% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 53.8% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.2
- Published
- 2024-04-11 01:32Z2 YR AGO
- Last updated
- 2026-02-27 15:19Z6 MO AGO
- Reserved
- 2024-04-11
- Assigning CNA
- libreswan
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-404Improper Resource Shutdown or ReleaseClass
- CWE-617Reachable AssertionBase
- Data version
- 5.2
- Document digest
- 70756bf01b47c9416bd4d9f4c0e196dc468d29bbf3b3060b054d28aa9654d7c9
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
The Libreswan Project (www.libreswan.org)libreswan3.22 to 4.14— SRC: CNA
This issue is fixed in 4.15 and all later versions.