7.5

CVE-2021-27633: sap se sap netweaver as for abap (rfc gateway) Out-of-bounds Write

CVSS: 7.5v3.0HighModified
Published 09-06-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-27633 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in sap se sap netweaver as for abap (rfc gateway). EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (CVE.org)
EPSS score
1.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

SAP NetWeaver AS for ABAP (RFC Gateway), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method ThCPIC() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.51%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

0.00 pp

From 1.51% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Sap1 product
  • netweaver_abapkernel_7.22 | kernel_7.49 | kernel_7.53 | kernel_7.73 | kernel_8.04 | krnl32nuc_7.22 | krnl32nuc_7.22ext | krnl64nuc_7.22 | krnl64nuc_7.22ext | krnl64nuc_7.49 | krnl64uc_7.22 | krnl64uc_7.22ext | krnl64uc_7.49 | krnl64uc_7.53 | krnl64uc_7.73 | krnl64uc_8.04
Sap se1 product
  • sap netweaver as for abap (rfc gateway)< KRNL32NUC - 7.22 | < 7.22EXT | < KRNL64NUC - 7.22 | < 7.49 | < KRNL64UC - 8.04 | < 7.22 | < 7.53 | < 7.73 | < KERNEL - 7.22 | < 8.04 | < 7.77 | < 7.81 | < 7.82 | < 7.83

2 vendors · 2 products

References

2 links