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CVE-2023-27601

23
FAUCET Score

CVE-2023-27601 is a denial-of-service vulnerability affecting OpenSIPS versions prior to 3.1.7 and 3.2.4. It occurs when the sipmsgops module's delete_sdp_line function processes a malformed SDP body lacking a line feed terminator, leading to a server crash. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and no user interaction required, resulting in a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.1.7CPE matchmatch criteria
cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*
>= 3.2.0, < 3.2.4CPE matchmatch criteria
cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 34th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / OpenSIPS/opensips/commit/8f87c7c03da55f9c79bd92e67fa2c94b2a7ce5cf
PatchThird Party Advisory
github.com / OpenSIPS/opensips/security/advisories/GHSA-xj5x-g52f-548h
Third Party Advisory
opensips.org / docs/modules/3.3.x/sipmsgops.html
Vendor Advisory
opensips.org / pub/audit-2022/opensips-audit-technical-report-full.pdf
Vendor Advisory